Sierra
Mariner 70 - 125 HP 4 Cylinder Gearcase Assembly Exploded View
Mariner Gearcase Assembly Exploded View Diagram and Parts
Fits 70, 75, 80, 90, 100, 115, 125 HP 4-Cyl
Figure #DescriptionO.E.M. #Sierra #Qty.
1Water Tube Seal43023218-8306 11
2Screw10-8248327 4
3Washer12-29245 4
4Insulator23-43045 18-05684
5Water Pump Housing817275A2 18-35721
6Impeller47-430262 18-3056 21
7Impeller Key28-43037 18-32931
8Gasket27-817277 18-2566 1 21
9Face Plate817276 18-3122 21
10Gasket27-430331 18-2564 1 21
11Screw10-8248326 6
12Washer12-29245 6
13Pump Base43055A4 1
14Seal26-43035 18-0583 11
15Seal26-43036 18-0522 11
16Gasket27-430472 18-2565 1 21
17Carrier w/Bearing43040A1 1
18Trim Tab31640A1 18-60111
19Sleeve43046 1
20Wear Sleeve Assembly42461A1 1
21Screw10-825427 1
22Drive Shaft45-43031A1 1
23Shift Shaft Coupler43585 1
24Screw10-824832-6 2
25Seal26-8164641 18-2054 11
26Bushing Assembly23-43052A4 1
27O-Ring25-45710 18-7198 11
28Shift Shaft Coupler43048A1 1
29E-Ring53-29641 18-42951
30Shim Assembly15-44492A1 AR
31 & 32Bearing & Race31-42677A1 18-11181
33Gear Housing1667-9011A73 1
34Gasket12-19183 18-2945 11
35Plug10-28653 1
36Plug10-79953 18-22441
37Plug22-67892A1 18-23751
38Pinion Nut11-35921 18-37191
39Pinion Gear43-44484 1
40Shim Cam76039 1
41Shim Assembly15-44491A1 AR
42 & 43Bearing & Race31-30894A1 18-11561
44Roller Bearing31-30895 18-11571
45Forward Gear43-12634A2 1
46 & 47Cam Follower Assembly12239A1 1
48Ball Bearing30-44530 3
49Spring24-30622 1
50Clutch52-822539 18-22361
51Cross Pin17-30632 18-23571
52Spring24-30893 18-23481
53Prop Shaft44-12238T 1
54Reverse Gear43-12635 1
55O-Ring25-97386 18-7961 11
56Thrust Bearing31-12576 18-11121
57Thrust Washer12-12577 1
58Roller Bearing31-12578 18-11131
59Bearing Carrier12596A2 1
60Washer12-70132 2
61Nut11-401198 2 2
62Roller Bearing31-30956 18-11581
63Seal26-76868 18-2002 11
64Seal26-70081 18-2053 11
65Thrust Washer13191A1 18-42211
66PropVarious AR
67Tab Washer14-31210 18-32001
68Prop Nut11-52707 18-37001
1Indicates contents of seal kit 18-2626
2Indicates contents of water pump kit 18-3214
ARAs required
Average Customer Review for Propeller Lock Nut - 18-3700 - Sierra
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Nut
by Charles from Casper, Wyoming on June 30, 2012
The nut you sent was the wrong size. Needed to be a 1" NOT a 1-1/16" so the washer was wrong also Propeller looks OK Haven't tried it yet.
(1 of 1 people found this review helpful)
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WRONG SIZE
by BOB from Industry, Pennsylvania on July 23, 2011
I WENT THROUGH THE WEB SITE PROCESS TO ORDER THE PROP I NEEDED AND IT AUTOMATICLY OFFERED ME THE OPTION OF BUYING THE PROP NUT AND OTHER ACCESSORIES THAT GO WITH THE PROP. EVERYTHING ELSE WORKED BEAUTIFULY BUT THE PROP NUT WAS TOO LARGE. SINCE IT COULDN'T BE RETURNED IF OPENED I JUST USED THE OLD NUT AND TOSSED THE NEW ONE.
(4 of 5 people found this review helpful)
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Average Customer Review for Sierra 18-2375 - Drain Plug W/Magnet
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Poor gasket
by Steve from Commerce, Michigan on June 09, 2017
Needs a better gasket. I went to the dealer to buy more robust gaskets. Cheap cardboard leaked. Very frustrating
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Perfect replacement
by Tom from Mentor, Ohio on August 08, 2016
Easy to find the right part on the web site. Exact replacement. My motor is a 79 so it is a real relief to have a source for parts.
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magnet
by Victor from shelby, Iowa on June 15, 2015
just what I needed and the magnet is a nice feature
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Fix as expected for my Mariner 20hp
by Nick from Des Plaines, Illinois on June 05, 2015
nylon washer and fit as expected for my Mariner 20hp
(1 of 1 people found this review helpful)
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Essential Parts
by Darryl from Decatur, Illinois on November 30, 2014
An excellent replacement to worn OEM parts. After years of routine service on my lower unit, the OEM parts became worn and hard to take off and put back on. This part assembly was a perfect fit for my Merc 225 EFI.
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lower unit drain plug
by Bob from Carthage, Missouri on August 08, 2014
Exact replacement for original. Works great
(1 of 2 people found this review helpful)
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Mercury lower unit plugs
by David from Harrison Township, Michigan on October 27, 2013
lived up to my expectations
(0 of 1 people found this review helpful)
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magnet plug
by Willie from Moweaqua, Illinois on September 19, 2013
would recommend using these plug so u know. if u have a problem in lower unit
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wrong size
by David from Attalla, Alabama on August 24, 2013
wrong size
(0 of 1 people found this review helpful)
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oem fit
by Stewart from Winnipeg, Manitoba on June 24, 2013
mercury outboard
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rgschmidt
by Reuben from Emelle, Alabama on March 24, 2013
Just like original. Great!
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Heavy duty - just like the OEM
by Nick from Andover, Minnesota on August 24, 2012
Was as stout as the original, and has nice clean threads.
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Cory
by Cory from Katy, Texas on June 15, 2012
High quality product, excellent replacement for original part
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Mercury Drain Plug - Magnetic
by Michael from Mars Hill, North Carolina on January 05, 2012
Exactly as described. Fit perfectly.
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Review for Sierra 18-2375 Drain Plug w/Magnet
by a Customer on September 04, 2009
(1 of 3 people found this review helpful)
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Review for Sierra 18-2375 Drain Plug w/Magnet
by a Customer on July 20, 2009
Shipping and handling is totally ridiculous $11.00 What were they thinking?
(5 of 5 people found this review helpful)
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Perfect
by Timothy from Lakeland, Florida on May 22, 2016
Exactly what I needed
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Average Customer Review for Sierra Omc & Merc. Seal - 18-2002 - Sierra
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POOR
by Jarold from Henderson, Nevada on October 30, 2014
DID NOT RECIEVE MY PRODUCT!!!!!!!!!!!!!
(2 of 2 people found this review helpful)
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Product performs as expected.
by William from Orangevale, California on September 20, 2014
Product performs as expected and was delivered in two days!
(1 of 1 people found this review helpful)
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drive shaft seals
by Victor from Interlachen, Florida on August 31, 2013
right on time,good servis
(0 of 1 people found this review helpful)
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seals
by Daniel from Bloomington, Texas on December 02, 2011
Alway very nice products and fast shipping
(1 of 1 people found this review helpful)
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Perfect fit
by Michael from Hyattsville, Maryland on September 30, 2015
Perfect, great price, bought a bunch
(1 of 1 people found this review helpful)
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Average Customer Review for Sierra 18-3056 Water Pump Impeller
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Sierra water pump impeller
by Calvin from Spanish Fork, Utah on April 13, 2020
I have used this Sierra product before with good results.
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wrong part?
by Steve from Elk River, Minnesota on August 07, 2017
I ordered the replacement water pump impeller using the model number, serial number, and year of my outboard motor. I received the part in a timely matter. I then pulled the motor out of the water and begin the replacement process. Once I had the old one out I noticed the new one was 1/4" deeper then the old one. It fit in all other aspects, just too deep. So I went to the local parts store the next day. I used all the same numbers at the parts store and it resulted in the correct impeller. The parts store personnel and I still do not know why I was sent the wrong one. Also the bag the new impeller came in blew away so I did not send it back. Bummer cost me a day on the lake and 30.00 dollars.
(2 of 4 people found this review helpful)
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Good fast delivery
by Doug from Sheboygan Falls, Wisconsin on August 08, 2016
Hey - I got the right parts, at a fair price in just a couple days and the process for finding them online was no big deal. What more can you ask for?
(2 of 3 people found this review helpful)
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Very satified
by Henry from Hoschton, Georgia on June 28, 2016
Could not have been better!
(2 of 3 people found this review helpful)
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Impeller worked great!
by Brian from Harrisburg, South Dakota on June 02, 2015
The impeller worked great... wish it would come as a full kit however, with gaskets and all.
(4 of 5 people found this review helpful)
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good produce as advertised
by Bruce from Killeen, Texas on April 04, 2015
Good packaging, fast shipping, fast turnover. New in package as advertised, Good quality at great price.
(2 of 3 people found this review helpful)
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Geat Product
by Jon from Fair Oaks, California on May 07, 2014
Exactly what I needed to replace my old impeller
(2 of 4 people found this review helpful)
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Impeller order
by Richard from Sneads Ferry, North Carolina on February 16, 2013
Product was delivered just in a nick of time. Arrived several days before due date. It was the right part and of very good quality and packaged properly. Thanks for the quick shipment. I have ordered parts from you before and am impressed with your return policy. I consider it the best in the industry.
(2 of 4 people found this review helpful)
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Water Pump Impeller - Sierra
by Benjamin from Dacula, Georgia on September 27, 2012
ok
(2 of 3 people found this review helpful)
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Water Pump Impeller
by James from Warrenton, Oregon on June 12, 2012
Great price and fast service!
(6 of 7 people found this review helpful)
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Average Customer Review for Water Pump Impeller Key - 18-3293 - Sierra
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never got item
by Tom from Fridley, Minnesota on October 05, 2012
I think I deleted your respond message. Never got the item ordered. Again my address: 6340 Quincy St NE Mpls., MN 55432 Tom
(0 of 4 people found this review helpful)
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no merchandise received
by Tom from Fridley, Minnesota on September 24, 2012
I never received the first one. I wrote you guys my right address and I still never got the second order. Please check my emails again. Bet you I wrote : 6340 Quincy ST NE Fridley, MN 55432 Thank you.
(0 of 4 people found this review helpful)
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Review for Sierra 18-3293 Impeller Key
by a Customer on March 20, 2009
(4 of 8 people found this review helpful)
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Average Customer Review for Propeller Thrust Washer - 18-4221 - Sierra
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Right Product
by Brett from Huntingdon, Pennsylvania on July 26, 2012
It was easy...... Put a little info in and it shows all the parts that are needed.
(0 of 2 people found this review helpful)
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thrust washer
by Brian from Cedar, Kansas on May 28, 2012
shipped fast...fit perfectly...no complaints.....would recommend to everyone
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washer
by Bob from Calgary, Alberta on August 30, 2011
everything was a 100%
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Average Customer Review for O Ring - 18-7961 - Sierra
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Good Buy
by Jon from Fair Oaks, California on May 22, 2014
Reasonably priced...fits perfectly.
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bearing carrier o-ring
by Robert from San Gabriel, California on February 16, 2012
Worked great.
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Great
by Brandon from Milton, Florida on July 30, 2016
It fit perfectly
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Very pleased
by Thomas from Lebanon, Tennessee on April 21, 2016
Very happy, great price, great product
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Works as expected
by Mark from Belleville, Michigan on August 13, 2015
Does what it is supposed to do.
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Fits Great
by Ken from Towanda, Kansas on November 17, 2014
Great Product, perfect fit, fast shipping
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Mercury Trim Tab
by David from Saint Francis, Minnesota on August 22, 2013
Looks like the original, great price, very fast shipping
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does not leave much room
by Donald from Cincinnati, Ohio on May 30, 2013
I put this on with what I believed to be the stock prop and it a 14 5/8 x 17p Solas on Alpha 1. It left about a 16'th inch clearance. So I replaced it with high performance anode and it took a shorter bolt.
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Trim Tab
by Rob from West Warwick, Rhode Island on October 25, 2012
Great Product Fits Well
(2 of 2 people found this review helpful)
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works as advertised
by Wladimir from Mocanaqua, Pennsylvania on July 07, 2012
very satisfied
(2 of 3 people found this review helpful)
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trim tab
by Steve from caldwell, Idaho on May 26, 2012
everything i have bought from you has been great thank you:)
(1 of 1 people found this review helpful)
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Great Company - Great Product
by Hayden from Grenada, Mississippi on March 23, 2012
Very please with this product...all parts were included....easy installation...purchased this product based on other reviews...Hats off to iboats.com...fast shipping...GREAT prices...will do business with them again.
(8 of 10 people found this review helpful)
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Based On 23 Reviews | Write Review
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Great Kit
by David from Ennis, Texas on July 07, 2017
Kit was exactly what was needed to rebuild the water pumps on my Force/Mercury 90hp motors. Great Kit, Good Price
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Great deal
by Jackie from Buchanan, Michigan on June 25, 2017
The impeller kit fit the 1996 120hp force perfectly. Iboats is one of the best sites ever
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Impeller review
by Curtis from Deerfield, Michigan on October 22, 2016
Product arrived in timely manner ,appears to be good quality ,however the kit does not come with upper sling seal that I had to purchase from a marine dealer
(2 of 2 people found this review helpful)
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Will not fit 1998 Mercury 60HP 2 stroke!
by Randy from Fort Dodge, Iowa on August 14, 2016
Impeller was too big and gaskets and plate were different from what was on there. Customer service rep told me this kit would work after telling him model and serial# on motor...
(1 of 1 people found this review helpful)
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Impeller repair for my 1995 Mercury
by Peter from Lombard, Illinois on August 10, 2016
The kit came quickly and the repair went smoothly. I was back out in the water enjoying my boat again!
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iboats is the best!
by Anthony from Johnsburg, Illinois on June 26, 2016
Great product, perfect fit for my 1990 Mariner 115. iboats products consistently work great and are shipped quickly. Customer service always steers me to the right product. Thanks for helping me keep that old motor running!
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impeller kit
by Charles from Somerset, Kentucky on May 21, 2016
impeller kit and gaskets fit perfect for my Force by Mercury.
(0 of 1 people found this review helpful)
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impeller kits
by Stephen from Newton, Alabama on September 13, 2015
I bought two impeller kits for my outdrive one worked and one didn't. I ordered another one from a different vender, and replaced the one that didn't work. When we took the out that didn't work one of the blades were deformed. The one we put back in work OK. Guess it was just a bad impeller.
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Wrong part
by Darryl from Laotto, Indiana on August 24, 2015
It did not look like my parts
(2 of 2 people found this review helpful)
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Adequate parts, OEM is better
by Michael from Grand Blanc, Michigan on June 08, 2015
This kit seemed fine. I think I'll stick with OEM from now on though. The rubber lip on one gasket is thinner and the way it was packaged in a bag caused the thin gasket to wrap around the metal plate and rip slightly. This might be one part to not try to save a few bucks on, in my opinion.
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Happy with all. Looks great
by Richard from Bolivia, North Carolina on April 16, 2015
Got it fast and looks good
(3 of 3 people found this review helpful)
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We are very satisfied
by Leonard from Darlington, South Carolina on April 15, 2015
We just purchased a houseboat that came with a 98 Honda 4 stroke engine that needed a water pump. We called dealerships (which didn't have it and couldn't get it) and search the web, when we came to iboats web page we found what we needed and it was reasonable priced. We ordered it on Tuesday it arrived on Friday in time for our fist weekend on our boat. Thanks iboats
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Force water pump kit
by Steven from Monticello, New York on July 31, 2014
Since this is a spare kit, I haven't used it. The kit appears to be identicle to the original. Shipping was quick and price was good.
(1 of 2 people found this review helpful)
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Great parts wrong choice
by Charles from Kimball, Michigan on May 30, 2014
What I thought I was ordering turned out to be incorrect. But the quality of the parts recieved are top notch. Although still waiting on a refund.
(0 of 1 people found this review helpful)
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Pats Missing
by Jim from Pensacola, Florida on January 15, 2014
Package was missing 2 O rings due to knife cut along side and parts dropped or were taken out. Iboats shipped complete package, ASAP! I have had nothing but GOOD results for Sierra products.
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Way easier than I expected
by Joe from Cary, North Carolina on September 21, 2013
First time I did this and it was really simple. Parts fit perfectly. There are a number of good YouTube videos on how to do this, so if you are at all comfortable with a wrench, no worries on doing a good job. Do put a pad of cardboard under the outdrive when you split the case because it will slobber some oil - maybe 3 tablespoons.
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pump impeller kit
by Rodger from Guntersville, Alabama on July 10, 2013
i liked the kit
(2 of 2 people found this review helpful)
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NO FACE SEAL
by Jon from New Albin, Iowa on April 10, 2013
I purchased 2 of these kits, one for my 60hp 4 stroke bigfoot, and one for my freind's 60hp 4 stroke standard. Repaired mine first, kit is fine for that but in product description, it should clearly state "FACE SEAL SOLD SEPERATELY". The second issue I have is that this same kit is listed for the standard lower unit. Per my Mercury shop manual, this is incorrect. I still need to contact iboats in this reguard. The no face seal warning, and incorrect part# reference is what is dragging this review down, what I was able to install though was fine.
(1 of 1 people found this review helpful)
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5 star rating
by Brian from Holiday, Florida on January 25, 2013
This was my first order with iboats. Fast service. Product as described. Reasonable price. Will use again.
(0 of 1 people found this review helpful)
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Water Pump impeller repair kit
by Vernie from St. Augustine, Florida on November 18, 2012
The kit was shipped promptly and was the exact fit for my Honda outboard. This is a great place to shop for outboard motor parts.
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Incomplete kit
by James from Waco, Texas on July 31, 2012
This kit did not include a face seal for the water pump. This is a critical part and should be included in the kit. The rest of the parts were acceptable, but make sure to order the face seal separately.
(5 of 5 people found this review helpful)
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worked great
by Zach from Leawood, Kansas on April 03, 2012
Worked great, make sure you order a shaft seal too this doesnt include one
(3 of 3 people found this review helpful)
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It's an impeller you will get.....eventually.
by Jonas from Bedford, Texas on July 06, 2010
The impeller is an impeller, be careful when ordering because it will take 4-7 days for them to get around to shipping it. Returns take more than 2 weeks to credit. Be careful.
(35 of 46 people found this review helpful)
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Based On 12 Reviews | Write Review
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nice
by Victor from shelby, Iowa on June 15, 2015
nice, just what I needed
(1 of 2 people found this review helpful)
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Great OEM replacement
by Darryl from Decatur, Illinois on November 30, 2014
An excellent replacement to worn OEM parts. After years of routine service on my lower unit, the OEM drain plug became worn and hard to take off and put back on. This part assembly was a perfect fit for my Merc 225 EFI.
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New Drain Plug
by Stanley from Linden, Alabama on October 16, 2014
I always replace the drain plug when servicing the unit.
(1 of 1 people found this review helpful)
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vent plug
by Bob from Carthage, Missouri on August 08, 2014
Fits perfectly on my 99 Merc 150
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very good price and shipping
by Wayne from Montgomery, Illinois on April 05, 2014
shipping was very fast
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Missing seal
by Michael from Minnetrista, Minnesota on February 23, 2014
Either the picture for this product is misleading, or there was a piece missing from the order. The picture shows a plug with a gasket however, only the plug was sent (no gasket). Two emails to the customer service area regarding this went unanswered.
(2 of 2 people found this review helpful)
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drain plugs
by Willie from Moweaqua, Illinois on September 19, 2013
fast shipping , great product
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Great replacement
by Shawn from Peculiar, Missouri on August 02, 2013
These plugs are a great replacement for the factory plugs. I will always keep a pair in the toolbox.
(0 of 2 people found this review helpful)
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What's to say
by Scott from Chisholm, Minnesota on June 12, 2012
This does what it is supposed to do and that is stop the oil from coming out when in place and allow it to flow out when removed. Seems to work well!
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Cheaper than Ebay
by Caleb from Mauldin, South Carolina on March 24, 2012
I lost my plug when winterizing, and found this one for cheaper than even ebay, exactly what I needed
(1 of 1 people found this review helpful)
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Mercury Drain Plug
by Michael from Mars Hill, North Carolina on January 05, 2012
Exactly as described. Fit perfectly.
(0 of 1 people found this review helpful)
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Review for Sierra 18-2244 Drain Plug
by a Customer on September 04, 2009
(1 of 5 people found this review helpful)
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Average Customer Review for Lower Unit Seal Kit - 18-2626 - Sierra
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Lower unit seal kit
by Michael from Deer River, Minnesota on June 01, 2017
The kit worked great. Even better was the prompt service from your company.
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Good
by Eric from Mascouche, Quebec on August 09, 2015
Good product for replacement parts ,butthe shopping from this shop is very too long.
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Great Product
by Jon from Fair Oaks, California on May 07, 2014
Great kit if you need to replace the seals and gaskets for your lower unit.
(0 of 1 people found this review helpful)
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Right Parts!
by William from Ogden, Utah on July 17, 2012
Call center "Adam" @ Ext:106 did a great job finding the right parts I needed to have the mechanic rebuild the lower end seals. Motor is not easy to find parts for except thru IBoats.
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lower unit seal kit
by Malcolm from Covington, Georgia on June 22, 2012
the kit works perfect ,a three hour workout , no problems , thanks, malcolm covington, ga.
(1 of 1 people found this review helpful)
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water pump reapir kit for 90 HP Force O B motor
by Paul from Logandale, Nevada on May 21, 2019
Good quality parts -easy to install --Wish the parts came with a diagram showing seals and bearings, it would have been nice to replace bearing and seals while the lower end was apart.
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Q:
Is this the enter and outer seals for 90hp 3 cyl?
A:
We will need to know engine model/serial number to confirm.


Q:
Need propeller shaft seal MERCURY pn. 26-98283 1983 25HP?
A:
Unfortunately we do not have a cross reference with that, you will need to contact Mercury.


Q:
Where is the 2nd seal behind this seal backwards? Do I order 2 of these?
A:
Typically these require two seals, but we will need your engine information to verify.


Q:
Does this kit fit a bf90ayjhta Honda motor and not what kit does?
A:
We do not have original information for the Honda Jet Outboard. So we cannot match up kit without OEM number.


Q:
I have an Mercury Engine Serial?
A:
If you can confirm serial number we can match it up.


Q:
Will this fit OT131788 2000 Mercury 125 hp?
A:
Yes. This will work for your engine.


Q:
Will this fit a 1989 15 hp gamefisher model number 225.581501?
A:
No it will not. We do not have an impeller kit for your motor.


Q:
My serial number is 1B027272 will this part fit my engine?
A:
Yes. This is the correct impeller repair kit for your engine.


Q:
Will this fit 1999 mercury 90 hp. Part no. 37-856984 8?
A:
This kit is for a 90 hp, 6 cylinder, 2-stroke engine with the serial number beginning 4845301 and up. The serial number needs to be provided to match the kit with the engine.


Q:
Will this fit a 2000 mercury 60/45 jet serial number OT097039?
A:
Yes this will work for your motor.


Q:
Serial number 5668683 stern drive number 5598836 1980 120 hp. Mercuriser need impeller?
A:
For the impeller kit for your outdrive you need part number 18-3217.


Q:
I have a 1991 4.3 L alpha1 Gen 2 will this kit fit?
A:
Yes this kit will fit.


Q:
Does this fit 1984 fourwinns horzions 190.. Mercrusier 3.0?
A:
We will need to know the outdrive model or serial number. If you have the Alpha One, but not Gen II (or pre-Alpha) you need part number 18-3217.


Q:
I have a 2008 Mercruiser 4.3L Alpha One. The serial # is 1A079304. Will this kit fit?
A:
Yes this kit will fit your Mercruiser Alpha One, Gen II.


Q:
Will this work for a Force 120hp '98?
A:
Yes this will work with your outboard motor.


Q:
Will this fit my engine 2002 90 ELPTO OT 418471?
A:
Yes this kit will work with your Mercury outboard.


Q:
Does this work for outdrive SN# 0L144645?
A:
This impeller kit will work with your Alpha One, Gen II outdrive.


Q:
Will this work for a 1971 Chrysler 12.9 model#122hb?
A:
I can not tell if it would work based off of the model number. I would need the serial number and whether it is an outboard or sterndrive.


Q:
Where is the face plate mentioned in the comments?
A:
Faceplate is the bottom left part in the picture. 18-2566 is the part number for it.


Q:
Does this kit contain everything needed to rebuild water pump?
A:
It is an impeller kit, so it is a repair kit mainly for the impeller. You may want to do a search for a complete water pump kit. However, the main component in any water pump assembly that needs repair/service is the impeller, so this may work for your purposes.


Q:
Whats the diffrence between same part but with a D at the end of it.?
A:
The D just indicates the packaging, all parts contained in kit are the same.


Q:
Does this fit a 1992 alpha one gen 2 sterndrive?
A:
Yes this will work for your outdrive.


Q:
Will this fit a 1987 Mercruiser Alpha I gen 1 Water Pump?
A:
Yes it should, provided that your serial number matches up. This is a standard replacement for Alpha 1/Gen 2 Mercruiser engines.


Q:
I have a 1998 force 120 elpt with a 4 bolt metal water pump cover ,will the 18-3214 kit work?
A:
If it is an Alpha 1/Gen 2 engine and the serial number matches up, then it will work. For more assistance, feel free to call our sales department at (800)-914-1123.


Q:
What is the impeller for a 1977 120 horse Chrysler?
A:
According to our charts, the one for your engine would be the 18-3085, assuming your model is a 1206/1207HA-HE, or 1208HA-HC engine.


Q:
Looking for a water pump kit for a 1976 120 horse Chrysler engine?
A:
We would need to know the original part number of the kit. You could consider contacting a mechanic or Mercury to get that and we could cross reference it for you if you call the number at the top of your screen.


Q:
Fit 90 hp merc?
A:
We will need engine serial number to confirm.


Q:
Does this key fit a 7.5 mercury?
A:
Yes, this is a universal style made to fit most small engine types, and it will work for a general 7.5 horsepower Mercury engine.


Q:
Is this the bearing the shifter housing in type2 lower unit?
A:
This particular one is on the prop shaft. It is part #57 in this exploded view: http://www.iboats.com/Mercruiser-Gen-II-Lower-Gearcase-Assembly-Exploded-View/dm/view_id.272971


Q:
Do these fit Mer 70Hp ser#08275667 can I get just the o-rings?
A:
There are no results with that serial number. Mercury serial numbers typically a letter, ex: 0B275667. Assuming that's what it is then you need part number 18-2375.


Q:
Will these work in a 1975 chrysler 75 75hp model?
A:
Yes it will work for your outboard motor.


Q:
Need a lower unit hydryolic plug for a 75hp Mariner any suggestions?
A:
We will need the serial number of the engine to cross reference the part.


Q:
Does this come with the o-ring gasket?
A:
Yes, the plug and the gasket come together.


Q:
Does this fit a Merc 25XD serial # 6634579?
A:
No you need 18-2375 from Sierra for your motor.


Q:
Can you tell me the thread size or dimensions on this plug? I need to be sure I use the correct gear lube adapter to refill gear lube grease on my outboard.?
A:
3/8", 16 pitch thread.


Q:
Does this replace the lower unit drain plug on an 85 HP force engine? The original needs to be removed with allen key?
A:
We can only match up by knowing year and serial/model number. Call us at the number at the top of the page with that info and we can take a look.


Q:
Will this plug fit a 75 Hp '1998 model two cycle?
A:
It should fit but match make sure to match it to the engine serial number.


Q:
Will this fit my 2002 "L" 120hp drive lower unit?
A:
This goes to a Force 120 1995-1999. We don't pull up any records of the Force 120 after 1999. You will need to contact Mercury.


Q:
How do i replace item?
A:
Identify the OEM number and see if it cross references with this part. If you need some assistance give us a call at 1-800-914-1123.


Q:
How do i replace item #2 speedometer tube? Does it just screw into the housing?
A:
This is a prop nut for the propeller not for speedometer pitot tube. Those tubes just install on the stern of your boat with a basic hole pattern and screw it in. If further assistance is needed call us at 1-800-914-1123.


Q:
Will this fit my 115 hp Mercury outboard, SN 1B995769, model 1115F13KD, 2013 mercury 115 4 stroke. If this is not the right prop nut/washer, can you provide the correct part number?
A:
Yes this will work with your application. This is for Mercury 75-300hp 2 and 4-Stroke outboards.


Q:
My new prop is a 1/4 inch to far up the prop shaft. The old prop had no spacer, does this washer make the new prop fit right or do I have the wrong prop?
A:
These tab washers are for keeping prop nut secure. These do not act as spacers or anything. You will need to contact us with your motor and prop number you have for us to look into a possible issue. Call us at the number at the top of the page.


Q:
Is fit for my Mercury 75hp 4 strokes motor?
A:
We will need to know the serial number in order to match up the part.


Q:
Will this fit on a 84 black max 150 hp?
A:
Yes it will, just keep in mind this is zinc.


Q:
Will this trim tab work on a 1981 898?
A:
Yes it will work. You will just need to confirm if the material is what you need. Zinc is for salt water.


Q:
I have a 20 HP mariner Sea Pro Maration. Model number 0B246587. Will this trim tab fit my motor?
A:
No it will not. You need part number 98432.


Q:
Trim tab for my 1986 mariner 150hp?
A:
This will work, but just keep in mind zinc is made for freshwater.


Q:
Will this fit a 35hp mercury - serial number 0B247641 - original anode has 31640-02 stamped on it.?
A:
Yes this will work for your motor. Just make sure zinc is the correct material you need.


Q:
I just purchase a 4 blade prop dia/14.25 pitch/19 it will not clear my trim tab. Do I need to order a smaller trim tab ?
A:
We will need to know motor to see if there is another option for trim tab anode.


Q:
I have a 2001 Mariah with a 5.0 and Alpha One, what rim tab will work for my freshwater application?
A:
The zinc anode is for salt water use. You will want part # 18-6241 or part # CM31640M. These are magnesium and are for fresh water use.


Q:
Will this fit a 2000 mercury 125 hp outboard?
A:
Yes this will work with your Mercury outboard.


Q:
What is the Dia. on the 31640 ?
A:
The measurements are as follows: Length: 7"; Diameter: 6-1/2"; Width: 6"; Height: 3-1/2"


Q:
Mine is diameter 4" 92 40 2 stroke mercury classic do you have this one?
A:
Serial number is needed to find correct anode. Give us a call at 1-800-914-1123 if you have further questions. http://www.iboats.com/Mercury-Trim-Tab-Anodes-and-Anti-Ventilation-Plate-Anodes/dm/view_id.1104573


Q:
Where are dimensions? 87 Mercruiser 3.0. is 3.5" diameter. What do I order?
A:
Length: 7", Diameter: 6-1/2", Width: 6", Height: 3-1/2". We can only cross reference OEM number so we would need serial number to access parts diagram. This should work if you have the Alpha Outdrive. Contact us at the number at the top of the page and we can look into it further if needed.


Q:
Will this fit a 1997 40hp force outboard product 31640?
A:
Hi Andrew- This Sierra trim tab anode will work for the 1997 40 hp Force outboard engine.


Q:
What do you have to fit a 2003, 50 hp johnson.2 cyl small gear case?
A:
This particular trim tab is best for Honda/Mercury applications. We unfortunately do not currently have anything that will match your Johnson application.


Q:
I have a 1982 mercury 150 black max will this fit?
A:
Yes it will, just keep in mind this is zinc.


Q:
Two gaskets?
A:
Yes this comes in a package of two.


Q:
Will this fit 89 sunbird with omc cobra sterndrive?
A:
This prop shaft seal is made for Mercury/Mercruiser, not OMC. You will need to give us your model number to your OMC engine and we can see what we have. Call us at 1-800-914-1123.


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Price: $11.95
Discontinued
Save: $1.94
(13% Off $13.89)
Part # 18-3700
Replaces OEM part #
  • CHRYSLER FORCE F7000
  • HONDA 90301-ZW1-003
  • MERCURY MARINE 11-52707
  • PLEASURECRAFT R017066
(Discontinued)
Price: $38.95
Discontinued
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(13% Off $44.99)
Part # 18-1118
No Reviews
Replaces OEM part #
  • MERCURY MARINE 31-42677A1
(Discontinued)
Price: $11.95
Discontinued
Save: $3.54
(22% Off $15.49)
Part # 18-1158
Replaces OEM part #
  • HONDA 91053-ZW1-003
  • OMC 387247
  • MERCURY MARINE 31-30956T
  • MERCURY MARINE 31-30956
(Discontinued)
Price: $5.95
Discontinued
Save: $1.23
(17% Off $7.18)
Part # 18-2566-9
No Reviews
Replaces OEM part #
  • MERCURY MARINE 27-817277
For: Mercury/Mariner 75 / 90 / 100 / 115; Mercruiser Alpha I - Generation 2
Package of 2
(Discontinued)
Price: $4.95
Discontinued
Save: $1.74
(26% Off $6.69)
Part # 18-2375
Replaces OEM part #
  • MERCURY MARINE 10-14834A1
  • MERCURY MARINE 22-67892A1
For: Mercury/Force and Mercruiser Alpha MR/Gen II lower units
Not to be used on #1/R lower units
(Discontinued)
Price: $7.95
Discontinued
Save: $1.04
(11% Off $8.99)
Part # 18-3122
Replaces OEM part #
  • HONDA 19231-ZW1-003
    For: 75-90 HP MERCURY MARINE 817276
  • MERCURY MARINE 817276 1
For Alpha l - Generation 2 S/N D494569 & Above
(Discontinued)
Price: $8.95
Discontinued
Save: $1.54
(14% Off $10.49)
Part # 18-2002
Shaft Size - 1.188"
Outer Diameter - 1.692"
Width - 0.250"


Replaces OEM part #
  • HONDA 91252-ZW1-003
  • OMC 320862
  • MERCURY MARINE 26-76868
(Discontinued)
Price: $13.95
Discontinued
Save: $3.04
(17% Off $16.99)
Part # 18-2565-9
No Reviews
Replaces OEM part #
  • HONDA 19242-ZW1-003
  • MERCURY MARINE 27-43047-2
For: Mercury/Mariner 70 / 75 / 80 / 90 / 100 / 115; Mercruiser Alpha I - Generation 2
Package of 2
(Discontinued)
Price: $49.42
Discontinued
Save: $8.57
(14% Off $57.99)
Part # 18-3200-9
Replaces OEM part #
  • CHRYSLER FORCE F697140
  • HONDA 90508-ZW1-003 For: 75-90 HP
  • MERCURY MARINE 14-31210
  • MERCURY MARINE 14-816629
  • PLEASURECRAFT R096117
Package of 10
(Discontinued)
Price: $18.95
Discontinued
Save: $4.64
(19% Off $23.59)
Part # 18-3056
Replaces OEM part #
  • MERCURY MARINE 47-43026-2
  • MERCURY MARINE 47-43026-T2
  • MERCURY MARINE 47-43026-2
  • MERCURY MARINE 47-43026-T2
  • MERCURY MARINE 47-43026 1
  • MERCURY MARINE 47-43026 4
  • MERCURY MARINE 47-43026B2
  • CHRYSLER FORCE 47-430262
  • HONDA 19210-ZW1-003
    For: 75-90 HP
For Alpha l-Generation 2 S/N D494569 & Above
(Discontinued)
Price: $13.95
Discontinued
Save: $1.04
(6% Off $14.99)
Part # 18-2053
Shaft Size - 1.185"
Outer Diameter - 1.754"
Width - 0.360"

Replaces OEM part #
  • HONDA 91255-ZW1-003
  • MERCURY MARINE 26-70081
(Discontinued)
Price: $7.95
Discontinued
Part # 18-7198-9
No Reviews
Dimensions ( in )
I.D. 1.43
Width .100

Replaces OEM part #
  • HONDA 91353-ZW1-003
  • OMC 308626
  • MERCURY MARINE 25-45710
(Discontinued)
Price: $3.88
Discontinued
Save: $2.11
(35% Off $5.99)
Part # 18-3293
Replaces OEM part #
  • MERCURY MARINE 28-43037
  • MERCURY MARINE 28-43037
Also large O/B's
(Discontinued)
Price: $41.95
Discontinued
Save: $6.54
(13% Off $48.49)
Part # 18-1156
No Reviews
Replaces OEM part #
  • HONDA 91051-ZW1-003
  • MERCURY MARINE 31-30894A1
(Discontinued)
Price: $10.08
Discontinued
Save: $5.51
(35% Off $15.59)
Part # 18-2564-9
Replaces OEM part #
  • HONDA 19234-ZW1-003
  • MERCURY MARINE 27-43033-1
For: Mercury/Mariner 70 / 75 / 80 / 90 / 100 / 115; Mercruiser Alpha I - Generation 2
Package of 2
(Discontinued)
Price: $21.96
Discontinued
Save: $12.03
(35% Off $33.99)
Part # 18-4221
Replaces OEM part #
  • MERCURY MARINE 13191A1
  • MERCURY MARINE 75282A1

  • For Mercury Marine: 4 & 6 Inline, 75 - 150 HP
(Discontinued)
Price: $76.95
Discontinued
Save: $7.04
(8% Off $83.99)
Part # 18-3572
No Reviews
Replaces OEM part #
  • MERCURY MARINE 817275A2
  • V-6 outboard
(Discontinued)
Price: $16.95
Discontinued
Part # 18-1157
No Reviews
Replaces OEM part #
  • HONDA 91057-ZW1-003
  • MERCURY MARINE 31-30895T
  • MERCURY MARINE 31-30895
(Discontinued)
Price: $197.95
Discontinued
Save: $41.94
(17% Off $239.89)
Part # 18-2236
No Reviews
Replaces OEM part #
  • MERCURY MARINE 52-822539
  • MERCURY MARINE 52-822539T
(Discontinued)
Price: $3.95
Discontinued
Save: $0.54
(12% Off $4.49)
Part # 18-7961
Dimensions ( in )
I.D. 3.650
Width .135

Replaces OEM part #
  • MERCURY MARINE 25-97386
(Discontinued)
Price: $13.40
Discontinued
Save: $7.39
(35% Off $20.79)
Part # 18-6011
Replaces OEM part #
  • HONDA 41107-ZW1-003ZA
  • MERCURY MARINE 31640Q 4
  • MERCURY MARINE 31640A1

Zinc
For: Mercury inline 3, 4 & 6 Cyl, & V6 Outboards; Mercruiser R/MR/Alpha One (Sterndrive & Transom Assembly 1983-90) & prior drives

Dimensions:

  • Length: 7"
  • Diameter: 6-1/2"
  • Width: 6"
  • Height: 3-1/2"
(Discontinued)
Price: $10.95
Discontinued
Save: $0.54
(4% Off $11.49)
Part # 18-0583
No Reviews
Shaft Size - 1.063"
Outer Diameter - 1.496"
Width - 0.197"

Replaces OEM part #
  • CHRYSLER FORCE 26-43035
  • HONDA 91251-ZW1-003
  • MERCURY MARINE 26-43035
(Discontinued)
Water Pump Impeller Repair Kit - Sierra
View Larger Photo
Representative photo only.
Price: $31.95
Discontinued
Save: $10.84
(25% Off $42.79)
Part # 18-3214
Replaces OEM part #
  • HONDA 19210-ZWL-303
  • MERCURY MARINE 47-43026T8
  • MERCURY MARINE 47-43026T6
  • MERCURY MARINE 47-43026T11

For:
  • HONDA BF70 (1996-1998)
  • HONDA BF90 (1996-1998)
  • MERCRUISER Alpha 1 - Gen II (S/N D494569 & UP)
  • MERCRUISER Vazer
Contains:
    ( 1 ) 18-2564 Water Pump Base to Face Plate Gasket, replaces O.E.# 27-43033-1
    ( 1 ) 18-2565 Water Pump Base to Gear Hsg. Gasket ,replaces O.E.# 27-43047-1
    ( 1 ) 18-2566 Face Plate to Water Pump Cover Gasket, replaces O.E.# 27-817277
    ( 1 ) 18-2944 Seal Ring, replaces O.E.# 26-45577
    ( 1 ) 18-3056 Impeller, replaces O.E.# 47-43026
    ( 1 ) 18-3122 Impeller Plate, replaces O.E.# 817276
    ( 1 ) 18-7420 O-Ring, replaces O.E.# 25-21836
**60hp 4-Stroke / Fits 4.25" Torpedo Diameter only
(Discontinued)
Price: $22.95
Discontinued
Save: $4.14
(15% Off $27.09)
Part # 18-1113
No Reviews
Replaces OEM part #
  • MERCURY MARINE 31-12578
  • MERCURY MARINE 31-12578T
(Discontinued)
Price: $3.95
Discontinued
Save: $1.34
(25% Off $5.29)
Part # 18-3719
No Reviews
Replaces OEM part #
  • MERCURY MARINE 11-35921
  • MERCURY MARINE 11-F694188
  • MERCURY MARINE 11-47411
  • MERCURY MARINE 11-826375
  • OMC 314730

Size: 5/8" - 18
(Discontinued)
Mercury Marine 26-76384 replacement parts
Price: $8.95
Discontinued
Save: $1.54
(14% Off $10.49)
Part # 18-2054
No Reviews
Shaft Size - 0.375"
Outer Diameter - 0.750"
Width - 0.243"

Replaces OEM part #
  • HONDA 91253-ZW1-003
  • MERCURY MARINE 26-816464
(Discontinued)
Mariner 70 - 125 HP 4 Cylinder Gearcase Assembly Exploded View-Cross Pin - Sierra
Price: $4.08
Discontinued
Save: $1.41
(25% Off $5.49)
Part # 18-2357
No Reviews
Replaces OEM part #
  • MERCURY MARINE 17-30632
(Discontinued)
Price: $3.25
Discontinued
Save: $1.74
(34% Off $4.99)
Part # 18-2244
Replaces OEM Part #
  • MERCURY MARINE 10-79953A2
  • MERCURY MARINE 10-79953Q2
For: Mercruiser #1/R/MR/Alpha I Gen II (Both Upper and Lower Units)
(Discontinued)
Price: $7.95
Discontinued
Save: $4.04
(33% Off $11.99)
Part # 18-0522
No Reviews
Shaft Size - 1.045"
Outer Diameter - 1.474"
Width - 0.187"

Replaces OEM part #
  • HONDA 91254-ZW1-003
  • MERCURY MARINE 26-43036
(Discontinued)
Price: $64.36
Save: $4.04
(5% Off $68.40)
Part # 18-2626
SHIPS TODAY!* if ordered in 6 hrs 6 mins.
Replaces OEM part #
  • CHRYSLER FORCE 26-43035A4

  • MERCURY/MARINER 26-43035A4

  • Contains:
    ( 1 ) 18-0522 Oil Seal, replaces O.E.# 26-43036
    ( 1 ) 18-0583 Oil Seal, replaces O.E.# 26-43035
    ( 1 ) 18-2002 Oil Seal, replaces O.E.# 26-76868
    ( 1 ) 18-2053 Oil Seal, replaces O.E.# 26-70081
    ( 1 ) 18-2054 Oil Seal, replaces O.E.# 26-816464
    ( 1 ) 18-2563 Face Plate to Water Pump Cover Gasket, replaces O.E.# 27-43034-1
    ( 1 ) 18-2564 Water Pump Base to Face Plate Gasket, replaces O.E.# 27-43033-1
    ( 1 ) 18-2565 Water Pump Base to Gear Housing Gasket, replaces O.E.# 27-817277
    ( 1 ) 18-2566 Face Plate to Water Pump Cover Gasket, replaces O.E.# 27-817277
    ( 3 ) 18-2945 Washer, replaces O.E.# 12-19183
    ( 1 ) 18-4261 Washer, replaces O.E.# 19643
    ( 1 ) 18-7188 O-Ring, replaces O.E.# 25-805726
    ( 1 ) 18-7198 O-Ring, replaces O.E.# 25-45710
Reverse Gear Thrust Bearing - Sierra
Price: $18.95
Discontinued
Part # 18-1112
No Reviews
Replaces OEM part #
  • MERCURY MARINE 31-12576
(Discontinued)
Price: $37.95
Discontinued
Save: $4.84
(11% Off $42.79)
Part # 18-3214D
Replaces OEM part #
  • HONDA 19210-ZWL-303
  • MERCURY MARINE 47-43026T8
  • MERCURY MARINE 47-43026T6
  • MERCURY MARINE 47-43026T11

For:
  • HONDA BF70 (1996-1998)
  • HONDA BF90 (1996-1998)
  • MERCRUISER Alpha 1 - Gen II (S/N D494569 & UP)
  • MERCRUISER Vazer
Contains:
    ( 1 ) 18-2564 Water Pump Base to Face Plate Gasket, replaces O.E.# 27-43033-1
    ( 1 ) 18-2565 Water Pump Base to Gear Hsg. Gasket ,replaces O.E.# 27-43047-1
    ( 1 ) 18-2566 Face Plate to Water Pump Cover Gasket, replaces O.E.# 27-817277
    ( 1 ) 18-2944 Seal Ring, replaces O.E.# 26-45577
    ( 1 ) 18-3056 Impeller, replaces O.E.# 47-43026
    ( 1 ) 18-3122 Impeller Plate, replaces O.E.# 817276
    ( 1 ) 18-7420 O-Ring, replaces O.E.# 25-21836
**60hp 4-Stroke / Fits 4.25" Torpedo Diameter only
(Discontinued)