Trim Tab Zinc Anode – Fits Yamaha 150-200 HP (Replaces 6K1-45371-02)

$11.34

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Product Details

This Trim Tab Zinc Anode – Fits Yamaha 150-200 HP (Replaces 6K1-45371-02) is engineered to provide essential corrosion protection for Yamaha outboard motors. It is specifically designed for 150-200 HP, 2-Stroke & 4-Stroke models from 1990–2024 that use a left-hand (counter) rotation lower unit, including LF150, LF200, L150, L200, LX150, and LZ series.

This part offers a direct interchange for Yamaha 6K1-45371-02, Sierra 18-6121, CMP CM6K14537102Z, and Tecnoseal 01134.

Designed for simple bolt-on installation.
Formulated with a marine-grade sacrificial zinc alloy for optimal protection in saltwater.
Meets or exceeds Mil-Spec A-18001K standards for material quality.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number
Yamaha	6K1-45371-02
Sierra	18-6121
CMP	CM6K14537102Z
Tecnoseal	01134

Engine & Model Compatibility

Confirm your engine model/year in the table below.

This anode is compatible with select left-hand (counter rotation) Yamaha outboard motors.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.	Notes
Yamaha	LF150	150	4-Stroke	All years	6K1-45371-02	All Models
Yamaha	FL150AET1X	150	4-Stroke		6K1-45371-02
Yamaha	LF200XB	200	4-Stroke		6K1-45371-02
Yamaha	LF200XC	200	4-Stroke		6K1-45371-02
Yamaha	L150ETX	150			6K1-45371-02	Counter Rotation
Yamaha	L150TXR	150			6K1-45371-02	Counter Rotation
Yamaha	L200ETX	200			6K1-45371-02	Counter Rotation
Yamaha	L200TXR	200			6K1-45371-02	Counter Rotation
Yamaha	LX150TXR	150			6K1-45371-02	Counter Rotation
Yamaha	LZ150TXR	150			6K1-45371-02	Counter Rotation
Yamaha	LZ200TXR	200			6K1-45371-02	Counter Rotation
Yamaha	L150ETXD	150	2-Stroke	1990	6K1-45371-02	Counter Rotation
Yamaha	L150ETXDA	150	2-Stroke	1990	6K1-45371-02	Counter Rotation
Yamaha	L200ETXD	200	2-Stroke	1990	6K1-45371-02	Counter Rotation
Yamaha	L200ETXDA	200	2-Stroke	1990	6K1-45371-02	Counter Rotation
Yamaha	L150TXRP	150	2-Stroke	1991	6K1-45371-02	Counter Rotation
Yamaha	L200TXRP	200	2-Stroke	1991	6K1-45371-02	Counter Rotation
Yamaha	L150TXRQ	150	2-Stroke	1992	6K1-45371-02	Counter Rotation
Yamaha	L200TXRQ	200	2-Stroke	1992	6K1-45371-02	Counter Rotation
Yamaha	L150TXRR	150	2-Stroke	1993	6K1-45371-02	Counter Rotation
Yamaha	L200TXRR	200	2-Stroke	1993	6K1-45371-02	Counter Rotation
Yamaha	L150TXRS	150	2-Stroke	1994	6K1-45371-02	Counter Rotation
Yamaha	L200TXRS	200	2-Stroke	1994	6K1-45371-02	Counter Rotation
Yamaha	L150TXRT	150	2-Stroke	1995	6K1-45371-02	Counter Rotation
Yamaha	L200TXRT	200	2-Stroke	1995	6K1-45371-02	Counter Rotation
Yamaha	L150TXRU	150	2-Stroke	1996	6K1-45371-02	Counter Rotation
Yamaha	L200TXRU	200	2-Stroke	1996	6K1-45371-02	Counter Rotation
Yamaha	L150TXRV	150	2-Stroke	1997	6K1-45371-02	Counter Rotation
Yamaha	L200TXRV	200	2-Stroke	1997	6K1-45371-02	Counter Rotation
Yamaha	L150TXRW	150	2-Stroke	1998	6K1-45371-02	Counter Rotation
Yamaha	L200TXRW	200	2-Stroke	1998	6K1-45371-02	Counter Rotation
Yamaha	LF150XCB	150	4-Stroke	Up to 2024	6K1-45371-02	Counter Rotation
Yamaha	LF150XC2	150	4-Stroke	Up to 2024	6K1-45371-02	Counter Rotation
Yamaha	LF200XB	200	4-Stroke	Up to 2024	6K1-45371-02	Counter Rotation
Yamaha	LF200XB2	200	4-Stroke	Up to 2024	6K1-45371-02	Counter Rotation

Technical Specs

Product Type: Trim Tab/Skeg Zinc Anode
Application: Saltwater
Material: Marine-Grade Sacrificial Zinc Alloy
Installation: Bolt-on with M10x1.25mm threaded mounting hole
Weight: 0.45 kg (1.0 lb)
Base Diameter: 101.6 mm (4 inches)
Thread Size: M10 x 1.25mm
Compliance: Meets Mil-Spec A-18001K, A-18001A, A-18001

What’s in the Box

1 x Zinc Trim Tab Anode (6K1-45371-02)

*Note: Hardware not included*

Installation Notes

Disconnect the battery to prevent accidental starts.
Locate and remove the old trim tab anode. The bolt is typically accessed from above the anti-cavitation plate.
Clean the mounting surface on the lower unit to ensure a good electrical connection.
Install the new anode, making sure any indicator marks align as per your engine's manual.
Tighten the mounting bolt securely. Do not overtighten. Reconnect the battery.

Troubleshooting & FAQ

How do I know if this anode fits my engine?

This anode is specifically for Yamaha 150-200 HP engines with left-hand (counter) rotation. Please verify your exact engine model and rotation type before purchasing. It is not suitable for standard, right-hand rotation models.

How often should this trim tab anode be replaced?

Inspect your anodes every 6-12 months. We recommend replacement when the anode is approximately 50% corroded to ensure your engine's lower unit remains protected.

What are the signs a trim tab anode is failing?

Visible signs include heavy pitting, crumbling, or the anode being reduced to less than half its original size. Failure to replace a depleted anode can lead to accelerated corrosion on your gearcase, propeller, and other underwater metallic components.

Can I use this on a standard rotation engine?

No. This part is specifically shaped and designed for left-hand (counter-rotation) lower units. Using it on a standard rotation engine may cause improper steering trim and reduced corrosion protection.

Is this part different from the original Yamaha part?

While this is an aftermarket part, it is manufactured to meet or exceed OEM specifications for material, fit, and function. It provides the same level of sacrificial protection as the original 6K1-45371-02 anode.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost?

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns?

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
This is an aftermarket replacement, not an OEM component.
Professional installation is recommended for safety and performance.

About Sea Sierra

Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.

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