Honda OEM
Replacement Trim Tab Anodes For Honda Part Number 41107-ZW1-003

Please note: Anodes are made out of different materials for different applications.

  • Zinc: is designed for saltwater use.
  • Magnesium: is designed for freshwater only.
  • Aluminum: is designed for salt and brackish water.

Always check propeller Clearance after installing new trim tab anodes.

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CM31640Z
by Amber from Satsuma, Florida on July 27, 2017
Perfect fit for my tr330 outdrive
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Zinc annodes
by Steven from Flemington, New Jersey on July 19, 2017
just what I needed and shipped quickly
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Seems to work.
by Alan from Burke, Virginia on August 30, 2014
Product installed easily. Not enough time to see if it actually does the job it is designed to do.
(1 of 1 people found this review helpful)
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Based On 4 Reviews | Write Review
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Tab fit perfect , better than factory.
by Rick from Midland, Michigan on August 25, 2016
Edges nice and smooth , no rough casting
(0 of 1 people found this review helpful)
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Trim tab
by Kevin from Columbus, Ohio on August 06, 2016
Perfect fit and a exact replacement part
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Very pleased
by Jamie from Thorndale, Texas on July 31, 2016
Very pleased with the Anode. Would do business with again.
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Perfect Replacement!!!
by Sherri from Dawsonville, Georgia on July 16, 2016
Did not know the purpose of this part or why they are made from different materials until reading the information provided by iboats.com. The part fit perfect, and iboats shipped my order quick and complete!
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Based On 10 Reviews | Write Review
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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 7 Reviews | Write Review
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Trim Tab
by Randy from La Crescenta, California on October 05, 2017
Trim tab was sent quickly and fit perfect. Thanks !!
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As described
by Kevin from Traverse City, Michigan on August 21, 2017
The anode correctly fit the mercruiser alpha drive on my 1985 Wellcraft 23 Nova XL. I did need a different anode to clear the new prop but I kept this anode for use with other lower pitch props.
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fits alpha 1 gen 1
by Stephen from Greenwood Lake, New York on September 11, 2015
Good fit. Good quality. Used for fresh water.
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Proper fit for Alpha One gen 1
by Stephen from Greenwood Lake, New York on September 01, 2015
Good quality replacement for Alpha One gen 1 (mine is a 1986).
(1 of 1 people found this review helpful)
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Not as advertised
by Walter from Hewitt, New Jersey on July 01, 2015
When I ordered this product in the reviews and questions answered it says it comes with the bolt. It does not. When I questioned it I was then told it doesn't. So now I have a product I can not use.
(0 of 1 people found this review helpful)
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trim tab
by Victor from shelby, Iowa on June 14, 2015
fits a lot better and the last tiwania I had on it
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GREAT Item.... Fit my motor perfectly :)
by William from Texarkana, Texas on September 09, 2011
GREAT Item.... Fit my motor perfectly :)
(5 of 5 people found this review helpful)
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Q:
Does this come with the bolt? also will it fit my 1997 alpha 1 gen 2?
A:
Yes this will fit your outdrive, but it does not come with bolt.


Q:
Will this fit my Mercury Black Max XR4 outboard?
A:
Mercury lists 97-15300 or 15300 for the replacement trim tab anode for your motor.


Q:
Will this fit a 1990 bravo one drive?
A:
Mercury lists 76214 trim tab anode for your outdrive.


Q:
Will this fit my 1993 bayliner trophy 2359 offshore merccruiser alpha one lower unit?
A:
Yes you will just need the correct material. Magnesium is for fresh water.


Q:
Will this fit stern drive serial # OD464875? its a 1990 Model Alpha one OA841044 1.81R?
A:
Yes you can use this for you outdrive. Just be sure you need magnesium which is used for fresh water.


Q:
Does this anode also include the bolt to mount it? If not where do I find the bolt?
A:
It does not include bolt. You will have to get bolt locally.


Q:
Does this fit 1987 mercury 150 black max?
A:
Yes this will fit on your motor. You just need to make this is the correct material as the magnesium is for freshwater.


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:
What size do i need for 89 Merc.25HP?
A:
We would need the serial # for your engine to find the correct part.


Q:
Is this trim tab 31640 for a 1985 mercrusier 898R?
A:
Yes it can work with your outdrive.


Ask a question
Question & Answer Guidelines
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Standard Shipping Policies

Please be careful when ordering this product, it has limitations that differ from our General 30-day Return Policy. After all, we want you to be satisfied with your order so you'll return again and again as an iboats.com customer, and to also recommend us to your boating friends

OEM Engine Parts
Engine parts may be returned within the first 30 days after shipment if in new, unused condition with all original packaging in good condition; plus parts, accessories, manuals, and/or warranty cards included. You will need to receive a return authorization number (RA #) as well as instructions from our Customer Service Department.

Engine Parts are subjected to a 20% restocking fee.

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Returns are not allowed on; liquids, graphics, or electrical products, or non-stocking items (items that take longer than 5 business days to ship).

See our complete return policy.
Genuine Honda Aluminum Trim Tab Anode
Genuine Honda Aluminum Trim Tab Anode
Price: $25.95
Part # 41107-ZW1-003ZA
No Reviews
Mercury/Mercruiser Trim Tab Anode, Zinc - Martyr Anodes
Price: $10.95
Discontinued
Save: $1.74
(13% Off $12.69)
Part # CM31640Z
Always check propeller clearance after installing new trim tab anodes.
(Discontinued)
Mercury/Mercruiser Trim Tab Anode, Magnesium - Martyr Anodes
Price: $14.95
Discontinued
Save: $1.64
(9% Off $16.59)
Part # CM31640M
Always check propeller clearance after installing new trim tab anodes.
(Discontinued)
Mercury/Mercruiser Trim Tab Anode, Zinc - Sierra
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)
Mercury/Mercruiser Trim Tab Anode, Magnesium - Sierra
Price: $16.95
Discontinued
Save: $6.94
(29% Off $23.89)
Part # 18-6241
Replaces OEM part #
  • MERCURY MARINE 31640Q 4
  • MERCURY MARINE 31640 T6
  • MERCURY MARINE 31640
  • HONDA 41107-ZW1-003ZA
Magnesium
For: Mercrusier R/MR/Alpha One (Sterndrive & Transom Assembly 1983-90) & prior drives
(Discontinued)