Trim Tab Anode – Fits Yamaha 150-200 HP Outboards (Replaces 6K1-45371-01-00, 6K1-45371-02-00)
This trim tab anode is designed for a wide range of Yamaha 150-200 HP outboard engines, including 2-Stroke L150/L200 models (1987–1999) and 4-Stroke models like the LZ150 (2000–2006), LF150 (2005–2024), LZ200 (2000–2012), and LF200 (2012–2024). It provides essential protection against galvanic corrosion in marine environments and assists in hydrodynamic trim adjustment.
This component is a direct replacement for Yamaha parts 6K1-45371-01-00 (standard rotation) and 6K1-45371-02-00 (counter-rotation), as well as several aftermarket equivalents. It ensures proper fit and function, helping to safeguard your engine's lower unit from costly damage.
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Material: Constructed from high-quality, marine-grade zinc alloy for superior sacrificial protection in saltwater, freshwater, and brackish conditions.
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Dual Function: Acts as both a sacrificial anode to prevent corrosion and a trim tab to help correct steering torque.
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Installation: Features a direct bolt-on design for straightforward installation with the included fastener.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand |
Part Number |
| Yamaha |
6K1-45371-01-00 |
| Yamaha |
6K1-45371-02-00 |
| Sierra |
18-6121Z |
| Sierra |
18-6121A |
| CMP |
CM6K14537102Z |
| CMP |
CM6K14537102A |
| Tecnoseal |
01134 |
| Tecnoseal |
01134AL |
| GLM |
12843 |
Compatible Engine Models
Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.
| Brand |
Model |
Rated HP |
Stroke |
Years |
OEM Part No. |
Notes |
| Yamaha |
L150ETXD |
150 |
2-Stroke |
1990 |
6K1-45371-01-00 |
|
| Yamaha |
L150ETXDA |
150 |
2-Stroke |
1990 |
6K1-45371-01-00 |
|
| Yamaha |
L150TXRP |
150 |
2-Stroke |
1991 |
6K1-45371-01-00 |
|
| Yamaha |
L150TXRQ |
150 |
2-Stroke |
1992 |
6K1-45371-01-00 |
|
| Yamaha |
L150TXRR |
150 |
2-Stroke |
1993 |
6K1-45371-01-00 |
|
| Yamaha |
L150TXRS |
150 |
2-Stroke |
1994 |
6K1-45371-01-00 |
|
| Yamaha |
L150TXRT |
150 |
2-Stroke |
1995 |
6K1-45371-01-00 |
|
| Yamaha |
L150TXRU |
150 |
2-Stroke |
1996 |
6K1-45371-01-00 |
|
| Yamaha |
L150TXRV |
150 |
2-Stroke |
1997 |
6K1-45371-01-00 |
|
| Yamaha |
L150TXRW |
150 |
2-Stroke |
1998 |
6K1-45371-01-00 |
|
| Yamaha |
L150 |
150 |
2-Stroke |
1987-1999 |
6K1-45371-01-00 |
|
| Yamaha |
LZ150 |
150 |
4-Stroke |
2000-2006 |
6K1-45371-01-00 |
|
| Yamaha |
LX150 |
150 |
2-Stroke |
1999-2001 |
6K1-45371-01-00 |
|
| Yamaha |
LF150 |
150 |
4-Stroke |
2005-2024 |
6K1-45371-01-00 |
|
| Yamaha |
L200ETXD |
200 |
2-Stroke |
1990 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
L200ETXDA |
200 |
2-Stroke |
1990 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
L200TXRP |
200 |
2-Stroke |
1991 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
L200TXRQ |
200 |
2-Stroke |
1992 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
L200TXRR |
200 |
2-Stroke |
1993 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
L200TXRS |
200 |
2-Stroke |
1994 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
L200TXRT |
200 |
2-Stroke |
1995 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
L200TXRU |
200 |
2-Stroke |
1996 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
L200TXRV |
200 |
2-Stroke |
1997 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
L200TXRW |
200 |
2-Stroke |
1998 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
L200 |
200 |
2-Stroke |
1987-1999 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
LZ200 |
200 |
4-Stroke |
2000-2012 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
LX200 |
200 |
2-Stroke |
1999-2001 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
LF200 |
200 |
4-Stroke |
2012-2024 |
6K1-45371-02-00 |
Counter-rotation version |
| Yamaha |
F150 |
150 |
4-Stroke |
1999-2024 |
6K1-45371-00-00 |
Part number variant |
| Yamaha |
F175 |
175 |
4-Stroke |
2017-2024 |
6K1-45371-00-00 |
Part number variant |
| Yamaha |
F200 |
200 |
4-Stroke |
1999-2024 |
6K1-45371-00-00 |
Part number variant |
Technical Specifications
| Specification |
Value |
| Product Type |
Trim Tab Anode |
| Installation |
Direct bolt-on with included fastener |
| Material |
Marine Grade Zinc Alloy |
| Color |
Silver/Gray |
| Weight |
Approx. 1.04 pounds (0.47 kg) |
| Fitting Type |
Single bolt mount |
| Working Environment |
Marine (saltwater, freshwater, brackish) |
| Purpose |
Sacrificial corrosion protection and hydrodynamic trim adjustment |
| Warranty |
Manufacturer dependent, typically 1 year |
Package Contents
- 1 x Zinc Trim Tab Anode (Replaces 6K1-45371-01-00 or 6K1-45371-02-00)
- 1 x Mounting Bolt
Installation Guide
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Safety First: Turn off the engine and remove the key. Tilt the outboard to the full "up" position to access the lower unit.
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Locate the Anode: Identify the old trim tab anode, which is typically located on the underside of the anti-cavitation plate, just above the propeller.
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Remove the Old Anode: Use a socket wrench to loosen and remove the single mounting bolt securing the anode. The anode may be tight due to corrosion.
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Clean the Mounting Surface: Thoroughly clean the mounting area on the lower unit. Remove any corrosion, salt, or marine growth to ensure a solid electrical connection, which is critical for the anode to function correctly.
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Install the New Anode: Position the new trim tab anode onto the cleaned surface, aligning the bolt hole.
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Secure the Bolt: Insert the new mounting bolt and tighten it securely. Do not overtighten. The anode should be firmly in place without any movement.
Troubleshooting & FAQ
Q: How do I know whether to use the standard or counter-rotation version?
A: This part replaces both Yamaha 6K1-45371-01-00 (standard rotation) and 6K1-45371-02-00 (counter-rotation). While physically similar, the fin is angled differently to counteract propeller torque. Consult your service manual or a certified technician to confirm which part number your specific engine model requires.
Q: How often should I replace my trim tab anode?
A: Anodes should be inspected during regular maintenance intervals (at least annually) and replaced when they are 50% corroded. The rate of corrosion depends on your boat's electrical system, water salinity, and usage.
Q: What are the signs that my anode needs replacement?
A: Visible signs include heavy pitting, crumbling, or a significant reduction in size. A worn-out anode will no longer protect your engine's metallic components from galvanic corrosion. You may also notice a change in steering effort if the trim tab function is compromised.
Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
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Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
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Fast Global Shipping: Free delivery worldwide in 5–15 days.
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Direct from Manufacturer: Competitive pricing without compromising quality.