Zinc Anode Rod Set – Fits Volvo Penta D19-D42 Diesel Engines (Replaces 838929, 804107, 800476)

Zinc Anode Rod Set – Fits Volvo Penta D19-D42 Diesel Engines (Replaces 838929, 804107, 800476)

This aftermarket zinc anode rod set is engineered to protect your Volvo Penta diesel engine from corrosion in saltwater environments. It is a direct replacement for multiple OEM part numbers, providing reliable performance and a precise fit for a wide range of models.

Designed for D19, D21, D27, D29, D30, D31, D32, D40, D41, D42, TAMD60-TAMD163, 2001, 2002, and 2003 series diesel engines, this sacrificial anode is essential for maintaining the integrity of your engine's cooling system.

• Material: High-grade zinc alloy specifically for saltwater applications.
• Installation Method: Threaded for easy installation and replacement.
• Direct Replacement: Replaces Volvo Penta part number 838929 and others.

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.

Technical Specifications

Package Contents

• 1 x Zinc Anode Rod (838929)

Installation Guide

1. Locate the existing anode rod on your engine. It is typically screwed into the engine block or cooling system components.
2. Shut off the engine and allow it to cool completely. Close any seacocks connected to the system.
3. Use an appropriately sized wrench to unscrew and remove the old, worn-out anode rod.
4. Inspect the threads of the engine housing for any damage or debris. Clean the threads thoroughly.
5. Apply a marine-grade thread sealant to the threads of the new anode rod to ensure a watertight seal.
6. Carefully screw the new zinc anode rod into place by hand to avoid cross-threading.
7. Tighten the rod firmly with a wrench until snug. Do not overtighten, as this can damage the threads.
8. Once installed, open any previously closed seacocks and check for leaks around the new anode before starting the engine.

Troubleshooting & FAQ

Q: How do I know if this anode rod will fit my engine?
A: We recommend cross-referencing your existing part number with the numbers in our "Part Number Cross-Reference" table. Additionally, check the "Compatible Engine Models" list to ensure your specific model is included.

Q: How often should I replace my zinc anode?
A: Anodes should be inspected during routine maintenance, typically every 3-6 months. Replace the anode when it is approximately 50-75% corroded to ensure continuous protection for your engine.

Q: What is the difference between zinc, aluminum, and magnesium anodes?
A: The type of anode depends on the water you operate in. Zinc anodes are specifically for saltwater. Aluminum anodes are best for brackish water, and magnesium anodes are required for freshwater.

Q: Is this an OEM part?
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.