Trim Tab Anode for Yamaha Outboards 50–100 HP – Replaces 67F-45371-00-00 and 6K5-45371-00
Trim Tab Anode for Yamaha Outboards 50–100 HP – Replaces 67F-45371-00-00 and 6K5-45371-00 is backordered and will ship as soon as it is back in stock.
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Trim Tab Anode for Yamaha Outboards 50–100 HP – Replaces 67F-45371-...
Trim Tab Anode for Yamaha Outboards 50–100 HP – Replaces 67F-45371-00-00 and 6K5-45371-00 is backordered and will ship as soon as it is back in stock.
Product Details
This bolt-on trim tab anode for Yamaha outboards is designed to provide sacrificial corrosion protection for the engine's lower unit. Catalog applications for the referenced Yamaha part include selected 50–100 HP 2-stroke and 4-stroke outboards, including T50, T60, F70, F75, F80, F90, and F100 models.
It is an aftermarket replacement for Yamaha OEM references 67F-45371-00-00 and 6K5-45371-00. Additional aftermarket references may include Sierra 18-6070 and 18-6111, Tecnoseal 01104 and 01104MG, GLM 12881, CMP CM6884537102Z, and QuickMarine 688-45371-01 and 688-45371-02. Always compare the original anode, mounting position, and OEM reference before ordering.
- Bolt-on trim tab anode for selected Yamaha lower-unit applications.
- Made from a zinc alloy intended for sacrificial corrosion protection in saltwater and other conductive marine environments.
- Helps protect the lower casing and drive from galvanic corrosion when correctly installed and electrically bonded.
- The trim tab may also be adjustable to help counter propeller torque and reduce steering pull, depending on the engine design.
Part Number Matrix
These references are provided to help compare OEM and aftermarket listings. A reference number alone does not confirm fitment for every engine configuration.
| Brand | Part Number |
|---|---|
| Yamaha | 67F-45371-00-00 / 67F-45371-00 |
| Yamaha | 6K5-45371-00 |
| Sierra | 18-6070 / 18-6111 |
| Tecnoseal | 01104 / 01104MG |
| GLM | 12881 |
| CMP | CM6884537102Z |
| QuickMarine | 688-45371-01 / 688-45371-02 |
Engine and Model Compatibility
The following Yamaha applications are associated with the referenced trim tab anode. Model suffixes, shaft lengths, lower-unit configurations, production years, and serial-number breaks can affect fitment. Confirm the OEM number and mounting arrangement on your specific engine before purchase.
| Brand | Model or Model Family | Rated HP | Stroke | Applicable Years | OEM Reference | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F50 / T50 variants, including F50TLRZ, F50TJRA, F50TLRA, F50TJRB, F50TLRB, and F50TLRC | 50 | 4-Stroke | 2001–2004 | 67F-45371-00-00 | Verify the exact model suffix and lower-unit configuration. |
| Yamaha | T50 variants, including T50TLRZ, T50TLRA, T50TLRB, T50TLRC, T50TLRD, T50TLR, T50LA, and T50TLR-series models | 50 | 2-Stroke | 2001–2012 | 67F-45371-00-00 | 2-stroke applications must be matched by exact model and year. |
| Yamaha | T60 variants, including T60TLRB, T60TLRC, T60TLRD, T60TLR, T60LA, and T60TLR-series models | 60 | 2-Stroke | 2003–2012 | 67F-45371-00-00 | Verify the exact model suffix and serial-number range. |
| Yamaha | F70LA and F70LA model-year variants | 70 | 4-Stroke | 2010–2016 | 67F-45371-00-00 | Catalog records show the trim tab in the lower casing drive assembly. |
| Yamaha | F75LA, F75TLR, and F75TLR-series variants | 75 | 4-Stroke | 2003–2017 | 67F-45371-00-00 | Confirm the exact model suffix, year, and lower-unit arrangement. |
| Yamaha | F80TJR, F80TLR, F80TJRA, F80TLRA, F80TJRB, F80TLRB, and related variants | 80 | 4-Stroke | 1999–2003 | 67F-45371-00-00 | Fitment varies by model suffix and production year. |
| Yamaha | F90JA, F90LA, F90TJR, F90TLR, F90TXR, F90XA, and related variants | 90 | 4-Stroke | 2003–2016 | 67F-45371-00-00 | Check the exact model and year before ordering. |
| Yamaha | 60, 70, 90, E60, P60, E75, P75, B90, C60, C70, C75, C80, C85, CV85, and C90 model families | 60–90 | 2-Stroke | 1996–2000 | 67F-45371-00-00 | Use the original part and engine identification label to confirm fitment. |
| Yamaha | F100TLR, F100TXR, and related F100 variants | 100 | 4-Stroke | 1999–2003 | 67F-45371-00-00 | Selected F100 applications are included; verify the exact model suffix. |
Technical Specifications
- Product Type
- Trim tab anode
- Installation
- Bolt-on
- Thread Specification
- M10 x 1.25 mm
- Material
- Zinc alloy intended for sacrificial marine corrosion protection
- Material Standard
- Specified as meeting Mil-Spec A-18001K requirements
- Color
- Metallic gray zinc finish
- Diameter
- 89 mm (3.5 in)
- Weight
- Approximately 0.41 kg (0.9 lb)
- Application Area
- Yamaha lower casing and drive assemblies using the referenced OEM anode
What's in the Box
- 1 x trim tab anode
Mounting hardware is not included. Reuse the original hardware only if it is undamaged, corrosion-free, and appropriate for the engine. Confirm the required hardware against the applicable service information.
Installation Notes
- Turn off the engine, remove the ignition key, and disconnect the battery according to the engine manufacturer's safety procedure.
- Locate the trim tab anode on the lower casing or underside of the anti-ventilation plate, depending on the engine configuration.
- Remove the original anode and inspect the mounting hardware. Replace damaged or severely corroded hardware as required.
- Clean the mating surface thoroughly to remove paint, oxidation, and corrosion. The anode must make reliable electrical contact with the lower unit.
- Position the replacement anode in the same orientation as the original and secure it with suitable mounting hardware. Do not over-tighten.
- Reconnect the battery and check that the anode is secure before operating the boat.
Maintenance and FAQ
What does a trim tab anode do?
The anode is sacrificial material that corrodes preferentially to help protect more expensive metal components of the lower unit from galvanic corrosion. On engines equipped with an adjustable trim tab, its position can also help counter propeller torque and reduce steering pull.
Does this anode fit only 50–90 HP Yamaha engines?
No. The referenced OEM part is also cataloged for selected Yamaha 100 HP 4-stroke applications. Confirm the exact model, year, lower-unit configuration, and OEM reference rather than relying on horsepower alone.
Can this anode fit both 2-stroke and 4-stroke engines?
Yes, the referenced part appears in catalog applications for both 2-stroke and 4-stroke Yamaha engines. The model, year, suffix, shaft configuration, and serial-number conditions must remain matched when checking fitment.
How often should the anode be replaced?
Inspect the anode at every service interval and replace it when approximately half of its material has been consumed, when it is heavily pitted or loose, or when corrosion protection is no longer adequate. Saltwater use may require more frequent inspection and replacement.
What are the signs of a worn anode?
Excessive pitting, crumbling, a substantially reduced shape, looseness, or new corrosion on nearby lower-unit components are signs that the anode should be inspected and replaced.
Does the anode include the mounting bolt?
No. Mounting hardware is sold separately and is not included with this anode. The original hardware may be reused only if it is in suitable condition and matches the required specification.
Is this for a standard or counter-rotation lower unit?
Fitment for counter-rotation or other specialized lower units is not established by horsepower alone. Check the original part number and service information for the specific engine before ordering.
Is this an OEM Yamaha part?
No. This is an aftermarket replacement for the listed Yamaha OEM references. It is not manufactured or branded by Yamaha.
How should I confirm compatibility?
Compare the original anode's shape, diameter, mounting location, thread specification, and OEM reference. Also verify the exact Yamaha model designation, production year, stroke type, shaft configuration, and serial-number range where applicable.
Safety and Important Information
- Verify the original part and engine identification before ordering. Horsepower alone is not sufficient to establish fitment.
- Do not paint over the anode or its electrical contact surface.
- Use suitable marine mounting hardware and follow the engine manufacturer's torque and safety procedures.
- This is an aftermarket replacement, not an OEM Yamaha component.
- Professional installation is recommended when the lower unit, mounting surface, or hardware shows significant corrosion.
About Sea Sierra
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