Sierra
Mercruiser GM V6 (185, 205) Sterndrive Exhaust Manifold Exploded View
Mercruiser Sterndrive Exhaust Manifold Exploded View Diagram and Parts
Fits GM V6 229 & 262 cu. In.
Models 185 & 205
Figure #DescriptionO.E.M. #Sierra #Application
1MANIFOLD99746A8 18-1952-1GM (V6) 229 & 262 cu.in. Models 185 & 205 (Port & Starboard). Use with Manifold Gasket: 18-2909; Mounting Kit: 18-8533
2ELBOW GASKET (OPEN)27-818832 18-2849Fits Manifold: 18-1952-1; Manifold Spacers: 18-1985, & 18-1908; Elbows: 18-1970-1, & 18-1976-1
3ELBOW GASKET (RESTRICTOR)27-41813 18-0897Fits Manifold: 18-1952-1; Manifold Spacers: 18-1985, & 18-1908; Elbows: 18-1970-1, & 18-1976-1
4MANIFOLD SPACER93322A12 18-19856" Spacer for Manifold: 18-1952-1. Use with mounting kit 18-8556. (Note: To mount elbows to spacer a separate mounting kit is required)
5MANIFOLD SPACER933220 18-19083" Spacer for Manifold: 18-1952-1. Use with mounting kit 18-8555 with 18-1976-1, or mounting kit 18-8554 with 18-1970-1.
6ELBOW GASKET (BLOCKED)27-860231 18-0672Fits Manifold: 18-1952-1; Elbows: 18-1970-1, & 18-1976-1
7HOSE FITTINGN/A 18-44613/4" - 14NPT X 1" Hose (Corrosion Resistant Brass Fitting)
8MANIFOLD GASKETN/A 18-2909Gasket for Manifold: 18-1952-1. Included in 18-8533 mounting kit.
9MOUNTING BOLTN/ANSSIncluded in 18-8533 mounting kit.
10MANIFOLD SPACER KIT807476A6, 93320A5 18-1908K3" Riser Kit for Manifold: 18-1952-1. Includes (2) spacers, restrictor, open, & blocked gasket. All necessary mounting hardware is also included.
11HOSE FITTINGN/A18-82163/4" - 14NPT X 1" Hose (Corrosion Resistant Brass Fitting)
12HOSE FITTINGN/A18-82153/4" - 14NPT X 3/4" Hose (Corrosion Resistant Brass Fitting)
13MANIFOLD ELBOW44354A3 18-1976-1Fits Manifold: 18-1952-1. Use Elbow gaskets: 18-2849. 18-0897, or 18-0672; Use mounting kit: 18-8554
14MOUNTING BOLTN/ANSSIncluded in 18-8505 mounting kit.
15MOUNTING STUDN/ANSSIncluded in 18-8529 mounting kit.
16MANIFOLD ELBOW98504A3 18-1970-1Fits Manifold: 18-1952-1. Use Elbow gaskets: 18-2849. 18-0897, or 18-0672; Use mounting kit: 18-8529, or if spacer is included use 18-8555.
17MOUNTING KITN/A 18-8556Use with Manifold Spacer: 18-1985. Includes (1) 18-2849 & 18-0897
18MOUNTING KITN/A 18-8554Use with Manifold Spacer: 18-1908 with Riser 18-1970-1. Included in 18-1908K. Includes (1) 18-2849 & 18-0897 elbow gaskets.
19MOUNTING KITN/A 18-8529Use with Riser: 18-1970-1. Includes 18-0897 elbow gaskets.
20MOUNTING KITN/A 18-8555Use with Manifold Spacer: 18-1908 with Riser 18-1976-1. Included in 18-1908K. Includes (1) 18-2849 & 18-0897 elbow gasket.
21MOUNTING KITN/A 18-8505Use with Riser: 18-1976-1. Includes 18-0897 elbow gasket.
22MOUNTING KITN/A 18-8533Use with Manifold: 18-1952-1. Includes 18-2909 manifold gasket.
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Based On 1 Review | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
not funny
by Gerald from Napa, California on March 07, 2013
I have already corresponded with you twice about how unhappy I was with the last shippment.I guess you didn't believe me or the word wasn't passed down. Now that doesn't suprise me.I did exchange a couple of futile emails with some air head that could care less about customer service.Next thing you would probably tell me is he was service all star of the year. I paid $13.00 for a three day delivery that took six or maybe seven due to factors you claim were out of your control. These small liteweight gaskets could have been sent in a regular envelope but nope they had to come in a stupid big box expensive and late at that.I will be buying more marine products in the future.I own a large cruiser and a smaller boat as you know call for continued upkeep. In the future I will not be spending another penny with your establishment. That by the way is how it works. Crappy service and some bone head that could care less giving lame excuses as to why this didn't go of as needed.Please remove any acount information you have. I will think about you when I spend however much on marine parts from someone a little more accomadating.If you find this email humorus there in may be part of the problem.
(5 of 6 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarHalf Star
Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarEmpty Star
Customer Service needs a boost!
by Terry from Binbrook, Ontario on May 30, 2018
The product is as expected..............very good, as good as OEM! Had a bit of a glitch getting the delivery once the parts arrived at the Canadian Customs Brokerage Service center five days later. An e-mail to me indicated one to two days to clear customs and then to be sent to me by Canada Post. After many phone calls to the service department at iBoats, it became very evident that they could not find out the parts delivery status. It took 14 days until I finally got an e-mail stating that Canada Post would deliver the parts that day. In total it took 19 days for the parts to be delivered to my door. I installed it the same day, ready to go on the water. If it hadn't been for the delivery issues, I would have rated with "five stars". This was my first not so good experience with ordering from iBoats. I will use their online ordering again.
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
satisfied customer
by James from Schertz, Texas on March 18, 2011
The eshaust manifold arrived one day before the promised date and the product was as good if not better than to OEM manifold. 100% satisfied.
(14 of 15 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Star
riser
by Eric from Pointe Claire, Quebec on July 09, 2014
perfect
(2 of 3 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarEmpty StarEmpty Star
Based On 2 Reviews | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Exhaust Manifold Elbow Gasket
by Elizabeth from Slate Hill, New York on July 17, 2015
they were bent/kinked and unusable. thanks
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
elbow gasket
by Jeffrey from Knoxville, Iowa on November 02, 2013
1989 454 closed cooling. Works great.
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Star
Review for Sierra 18-2909 Exhaust Manifold Gasket
by a Customer on September 13, 2009
(0 of 3 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Star
Review for Sierra 18-8554 Exhaust Elbow Mounting Kit
by a Customer on May 28, 2009
(0 of 2 people found this review helpful)
Was this review helpful?
Q:
I have a 1989 merc. with 5.7 chev. 350. Looking for the manifold. What is the right one for it?
A:
We would need to cross reference OEM number so we would need an engine serial number. Contact us at the number at the top of the page with that info.


Ask a question
Question & Answer Guidelines
This product ships in 1 to 3 business days.
Add to Cart and enter your Postal Code to determine the shipping charges.
Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies
Price: $5.90
Discontinued
Save: $2.09
(26% Off $7.99)
Part # 18-0897
Replaces OEM part #
  • MERCURY MARINE 27-41813
Used with:
    Fits Manifold: 18-1957-1, 18-1952-1, 18-1958, 18-1962
    Manifold Spacers: 18-1985, & 18-1908
    Riser: 18-1976-1, 18-1970-1, 18-1974
Included in 18-8554 mounting kit
(Discontinued)
Price: $313.60
Discontinued
Save: $78.39
(19% Off $391.99)
Part # 18-1952-1
Replaces OEM part #
  • MERCURY MARINE 99746A17
  • MERCURY MARINE 99746A8
Fits most 4.3L (229 & 262 CID) V-6 applications, Models 185 & 205, fits Port or Starboard
Supplied with Mounting Package
Use with:
    Mounting Kit: 18-8533
    Manifold Gasket: 18-2909
(Discontinued)
Price Too Low to Show!
Add to Cart for Price
Discontinued
Part # 18-1976-1, List Price: $250.99
Replaces OEM part #
  • MERCURY MARINE 44354A3
  • MERCURY MARINE 807988A2
For: most Mercruiser V-6 & V-8 applications 7° (4" O.D. Riser)
Comes with 18-0897,18-4263 & 18-4258
Use with:
    Manifold: 18-1952-1, 18-1953-1, 18-1957-1
    Riser Gasket: 18-0897 restrictor, 18-2849 open, 18-0672 blocked
    Mounting Kit: 18-8505, or if spacer is included use 18-8555
(Discontinued)
Price: $181.95
Discontinued
Save: $76.04
(29% Off $257.99)
Part # 18-1985
No Reviews
Replaces OEM part #
  • MERCURY MARINE 93322
For: Mercuriser 229 and 262 V6, 305-350 Small Block V8, 454 Big Block V
Used with:
    6" Spacer for Manifold: 18-1952-1, 18-1957-1, 18-1953-1
Use with Mounting Kit 18-8556 (To mount elbows to spacer a seperate mounting kit is required)
(Discontinued)
Price: $22.95
Discontinued
Save: $7.04
(23% Off $29.99)
Part # 18-8505
No Reviews
For: Mercruiser GM V6 229 and 262cu.in. (Models 185 and 205), GM Small Block V8 305-350cu.in. (Models: 200, 228, 230, 260, 898), GM Big Block V8 454cu.in. (Models: 330, 340 and 7.4L)

Used with:
    Riser: 18-1976-1
Includes 18-0897 elbow gasket
(Discontinued)
Price: $19.95
Discontinued
Save: $2.04
(9% Off $21.99)
Part # 18-0672-9
Replaces OEM part #
  • MERCURY MARINE 27-8637251
  • MERCURY MARINE 27-860231
Package of 2
Used with:
    Riser: 18-1970-1, 18-1976-1, 18-1974
    Fits Manifold: 18-1957-1
    Spacer: 18-1908
(Discontinued)
Price: $15.95
Discontinued
Save: $4.83
(23% Off $20.78)
Part # 18-2909-9
Replaces OEM part #
  • CRUSADER 97498
  • OMC 915025
  • VOLVO 856116-9
  • VOLVO 3853412
  • MERCURY MARINE 27-99757
  • YAMAHA YSC-12190-00-AC
Package of 2
For:
  • Volvo 4.3GL, GS, GI, GXI, OSI
  • GM V-6
  • Use With: Manifold: 18-1952-1, 18-1932
  • Included in 18-8533 mounting kit
(Discontinued)
Price: $142.04
Save: $30.93
(17% Off $172.97)
Part # 18-1908
No Reviews
Replaces OEM part #
  • MERCURY MARINE 93320
For: Mercruiser GM V6 229 and 262cu.in. (Models: 185 and 205),GM Small Block V8 305-350cu.in. (Models: 200, 228, 230, 260 and 898), GM Big Block V8 454cu.in. (Models: 330, 340 and 7.4L)
Used with:
    Manifolds: 18-1952-1, 18-1953-1, 18-1957-1
Use with mounting kit 18-8556. To mount elbows to spacer a separate mounting kit is needed
Price: $12.95
Discontinued
Save: $6.04
(31% Off $18.99)
Part # 18-8529
No Reviews
For: Mercruiser GM V6 229 and 262cu.in. (Models 185 and 205), GM Small Block V8 305-350cu.in. (Models: 200, 228, 230, 260, 898), GM Big Block V8 454cu.in. (Models: 330, 340 and 7.4L)

Used with:
    Riser: 18-1970-1 and 18-1974-1
Includes 18-0897 elbow gasket
(Discontinued)
Price: $13.95
Discontinued
Part # 18-4461
No Reviews
Replaces OEM part #
  • MERCURY MARINE 22-807155
3/4" - 14 NPT X 1" Hose
Corrosion Resistant Brass Fitting
(Discontinued)
Price: $55.95
Discontinued
Save: $14.04
(20% Off $69.99)
Part # 18-8555
No Reviews
For: Mercruiser 229 and 262 ci V6, 305 and 350 SB V8, 454 Big Block V8.

Used with:
    Riser Kit: 18-1908K and 18-1908 Spacer
    Riser: 18-1970-1
    Manifolds: 18-1952-1
Includes (1) 18-2849 & 18-0897 elbow gaskets
(Discontinued)
Price: $22.56
Discontinued
Save: $7.42
(24% Off $29.98)
Part # 18-2849-9
No Reviews
Replaces OEM part #
  • MERCURY MARINE 27-818832
  • MERCURY MARINE 27-863726
  • MERCURY MARINE 27-87105-1
Package of 2
Use With:
    Manifold: 18-1957-1, 18-1952-1, 18-1958, 18-1962
    Elbow: 18-1976-1, 18-1970-1, 18-1974
    Spacer: 18-1908, 18-1985
Included in 18-8554 mounting kit
(Discontinued)
Price: $41.62
Discontinued
Save: $22.90
(35% Off $64.52)
Part # 18-8554
For: Mercruiser 229 and 262 ci V6, 305 and 350 SB V8, 454 Big Block V8.

Used with:
    Riser Kit: 18-1908K and 18-1908 Spacer
    Riser: 18-1970-1, 18-1971, 18-1978
    Manifold: 18-1952-1
    Manifold Spacer: 18-1906
Use 18-8554 Mounting Kit when 18-1908 Spacer, 18-1970-1 Elbow and 18-1974 Elbow are used together
Included in 18-1908K
Includes (1) 18-2849 & 18-0897 elbow gaskets
(Discontinued)
Price: $139.71
Discontinued
Save: $57.24
(29% Off $196.95)
Part # 18-1970-1
No Reviews
Replaces OEM part #
  • MERCURY MARINE 98504A3
For: V-6 & V-8 applications 15° (3" O.D. Riser) Comes with 18-0897 & brass plugs
Use with:
    Manifold: 18-1952-1, 18-1953-1, 18-1957-1
    Elbow Gasket: 18-0897 restrictor, 18-2849 open, 18-0672 blocked
    Mounting Kit: 18-8529 or if spacer is included use 18-8554
(Discontinued)
Price: $21.95
Discontinued
Save: $7.04
(24% Off $28.99)
Part # 18-8533
No Reviews
For: Mercruiser GM V6 229 and 262cu.in. (Models 185 and 205)

Used with:
    Manifold: 18-1952-1
Includes 18-2909 manifold gasket
(Discontinued)
Price: $16.95
Discontinued
Save: $5.04
(22% Off $21.99)
Part # 18-8556
No Reviews
For: 229 and 262 ci V6, 305 and 350 SB V8, 454 Big Block V8.

Used to mount:
    Spacer 18-1985 to Manifolds 18-1953-2, 18-1957-1 and 18-1952-1
Includes (1) 18-2849 & 18-0897 elbow gaskets
(Discontinued)
Price: $47.99
Discontinued
Save: $9.00
(15% Off $56.99)
Part # 9-40583
No Reviews
Mounting Kit, Spacer
Fits 9-40530 3" spacer with 9-40559 riser
Includes 9-61414 and 9-61413 gaskets and mounting hardware required to bolt to 9-40505 manifold
(Discontinued)
Price: $102.99
Discontinued
Save: $26.01
(20% Off $129.00)
Part # 9-40530
No Reviews
Spacer
3" Center riser
Fits 9-40505 manifold
Sold individually
Use mounting kit 9-40582 with 9-40557 riser or 9-40583 mounting kit with 9-40559 riser
OEM 93320
(Discontinued)
Price: $133.99
Discontinued
Save: $30.01
(18% Off $164.00)
Part # 9-40531
No Reviews
Spacer
6" Center riser
Fits 9-40505 manifold
Sold individually
Use mounting kit 9-40584
Risers 9-40557 and 9-40559 will require their own mounting kits
OEM 93322
(Discontinued)
Price: $144.99
Discontinued
Save: $23.83
(14% Off $168.82)
Part # 9-40557
No Reviews
Replaces OEM#98503, 98504
Riser - 3"
Exhaust outlet 15° down angle
Use mounting kit 9-40580
For early model I/O and inboards
(Discontinued)
Price: $207.99
Discontinued
Save: $51.21
(19% Off $259.20)
Part # 9-40505
No Reviews
Manifold
Fits both sides of 229 and 262 CID V-6 engines
Use mounting kit 9-40576
OEM 99745, 99746
(Discontinued)