Yanmar Zinc Pencil Anode Kit – Fits 4LHA, 6LP, 6LY Marine Engine Series (Replaces 119773-92600)

Yanmar Zinc Pencil Anode Kit – Fits 4LHA, 6LP, 6LY Marine Engine Series (Replaces 119773-92600)

This marine-grade zinc pencil anode kit is designed to provide essential galvanic corrosion protection for Yanmar 4LHA, 6LP, 6LPA, and 6LY series marine engines operating in saltwater environments. It serves as a direct replacement for original factory parts to help safeguard your engine's cooling system components from corrosion.

This kit is a direct replacement for Yanmar part numbers 119773-92600, which includes 119574-44150 (4 pcs) and 119574-18790 (1 pc).

• Complete Kit: Includes 5 individual zinc pencil anodes for the intercooler, heat exchanger, and oil cooler.
• Corrosion Protection: Sacrificial zinc anodes protect critical engine components from galvanic corrosion in saltwater.
• Simple Installation: Features direct threaded NPT fittings for straightforward replacement.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Note: Most 4LH series engines (-TE, -HTE, -DTE) do not have any zinc anodes. This kit does not fit the 4LH-STE 230 HP model.

Technical Specifications

Package Contents

• 1 x Intercooler Zinc Anode (Replaces Yanmar P/N: 119574-18790)
• 4 x Heat Exchanger and Oil Cooler Zinc Anodes (Replaces Yanmar P/N: 119574-44150)

Note: Some Yanmar engine configurations, particularly those paired with a ZF transmission, may require a fifth small anode (119574-44150) for the transmission cooler. Please verify your specific engine and transmission requirements.

Installation Guide

1. Shut off the engine and allow it to cool completely. Close the relevant seacock.
2. Locate the existing zinc anode plugs on the heat exchanger, intercooler, and/or oil cooler.
3. Use a wrench to carefully unscrew and remove the brass plugs.
4. Remove the old, corroded zinc pencil from each plug. Use pliers if it is worn down significantly.
5. Clean the threads on the plug and the engine housing to ensure a good connection.
6. Thread the new zinc anode into the corresponding plug until it is hand-tight.
7. Apply thread sealant to the plug threads and reinstall it into the engine housing.
8. Tighten the plug securely with a wrench, but do not overtighten.
9. Repeat this process for all five anodes in the kit.
10. Once all anodes are replaced, open the seacock.
11. Start the engine and carefully inspect for any water leaks around the newly installed plugs.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my specific Yanmar engine?
A: The surest method is to cross-reference the OEM part number 119773-92600 with your engine's service manual. You can also check the "Compatible Engine Models" table on this page. Please note the specific exclusions, such as most 4LH series engines and the 4LH-STE 230 HP model.

Q: My engine setup seems to require five small zincs, but this kit only has four. Why?
A: This kit contains the standard four small anodes (119574-44150) and one large one (119574-18790). However, some Yanmar engines paired with a ZF transmission cooler require an additional small anode. You must verify if your transmission requires a separate anode and purchase it if needed.

Q: How often should I replace my engine's zinc anodes?
A: Best practice is to inspect anodes every 3-4 months and replace them when they are approximately 50% consumed. The rate of corrosion depends heavily on your boat's usage, water salinity, and any stray electrical currents.

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?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.