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) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Zinc Anode Rod Set – Fits Volvo Penta D19-D42 Diesel Engines (Repla...
Product Details
This Zinc Anode Rod Set is a crucial replacement part for protecting your marine engine from corrosion. It is specifically designed for use in saltwater environments and fits a wide range of Volvo Penta diesel engines, including the D19 through D42 series, TAMD60-TAMD163 models, and the 2001, 2002, and 2003 series.
This anode serves as a direct interchange for Volvo Penta part numbers 838929, 804107, 800476, 858501, and 3838499, as well as aftermarket references from Sierra (18-6001), GLM (12789), CMP (CM838929Z), and Tecnoseal (00714).
- Installs via a threaded connection.
- Made from high-quality zinc for maximum protection in saltwater.
- Acts as a sacrificial anode to prevent electrochemical corrosion of vital engine components.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 838929 |
| Volvo Penta | 804107 |
| Volvo Penta | 800476 |
| Volvo Penta | 858501 |
| Volvo Penta | 3838499 |
| Sierra | 18-6001 |
| GLM | 12789 |
| CMP | CM838929Z |
| Tecnoseal | 00714 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Volvo Penta | D19 | 4-Stroke | 838929 | |
| Volvo Penta | D21 | 4-Stroke | 838929 | |
| Volvo Penta | D27 | 4-Stroke | 838929 | |
| Volvo Penta | D29 | 4-Stroke | 838929 | |
| Volvo Penta | D30 | 4-Stroke | 838929 | |
| Volvo Penta | D31 | 4-Stroke | 838929 | |
| Volvo Penta | D32 | 4-Stroke | 838929 | |
| Volvo Penta | D40 | 4-Stroke | 838929 | |
| Volvo Penta | D41 | 4-Stroke | 838929 | |
| Volvo Penta | D42 | 4-Stroke | 838929 | |
| Volvo Penta | MD40A | 4-Stroke | 838929 | |
| Volvo Penta | TMD40 A/B/C | 4-Stroke | 838929 | |
| Volvo Penta | D4 | 4-Stroke | 838929 | |
| Volvo Penta | D6 | 4-Stroke | 838929 | |
| Volvo Penta | D9 | 4-Stroke | 838929 | Reported by BoatZincs.com |
| Volvo Penta | D11 | 4-Stroke | 838929 | Reported by BoatZincs.com |
| Volvo Penta | 2001 Series | 4-Stroke | 838929 | |
| Volvo Penta | 2002 Series | 4-Stroke | 838929 | |
| Volvo Penta | 2003 Series | 4-Stroke | 838929 | |
| Volvo Penta | TAMD60 | 4-Stroke | 838929 | Reported by BoatZincs.com |
| Volvo Penta | TAMD63 | 4-Stroke | 838929 | |
| Volvo Penta | TAMD70 | 4-Stroke | 838929 | Reported by BoatZincs.com |
| Volvo Penta | TAMD74 | 4-Stroke | 838929 | |
| Volvo Penta | TAMD75 | 4-Stroke | 838929 | |
| Volvo Penta | TAMD103 | 4-Stroke | 838929 | |
| Volvo Penta | TAMD122A | 4-Stroke | 838929 | |
| Volvo Penta | TAMD122P | 4-Stroke | 838929 | |
| Volvo Penta | D12C | 4-Stroke | 838929 | |
| Volvo Penta | TAMD162C | 4-Stroke | 838929 | |
| Volvo Penta | TAMD163A-A | 4-Stroke | 838929 | |
| Volvo Penta | TAMD163P-A | 4-Stroke | 838929 | |
| Volvo Penta | AQ200 (For Shield) | 4-Stroke | 838929 | Reported by Wholesale Marine |
| Volvo Penta | AQ30, AQ31, AQ40, AQ41 | 4-Stroke | 838929 | Reported by Wholesale Marine |
Technical Specs
- Product Type
- Zinc Pencil Anode Rod
- Installation
- Threaded
- Material
- Zinc (for saltwater use)
- Dimensions
- Length: 44.5 mm (1-3/4"), Diameter: 15 mm (9/16")
- Weight
- 0.045 kg (0.1 lbs)
- External Thread
- 7/16" UNC
- Internal Thread
- M8
- Package Quantity
- 1 unit (sets of 5 available)
- Other Technical Attributes
- Sacrificial anode for protection against electrochemical corrosion
What’s in the Box
- 1 x Zinc Anode Rod (838929)
Installation Notes
- Ensure the engine is turned off and has completely cooled down before starting.
- Locate the existing anode on the engine, typically found on the heat exchanger, aftercooler, or oil cooler.
- Place a suitable container below the anode plug to catch any draining coolant.
- Carefully unscrew and remove the old, depleted anode rod and plug assembly.
- Clean the plug's threads and the housing to ensure a proper seal.
- Install the new zinc anode rod into the plug and securely thread the assembly back into the engine housing.
- Tighten to the manufacturer's recommended torque specification. Do not overtighten.
- After installation, run the engine and carefully check for any leaks.
Troubleshooting & FAQ
How do I know if this anode will fit my engine?
This anode fits a wide variety of Volvo Penta diesel engines. Please review the 'Part Number Matrix' and 'Engine & Model Compatibility' tables on this page. Cross-referencing your engine model and original part number is the most reliable way to ensure a correct fit.
What are the signs that an anode rod needs replacement?
Visually inspect the anode rod. It should be replaced when it is approximately 50% consumed or eroded. Other signs include significant pitting, crumbling, or if it is completely gone. Regular checks during routine maintenance are recommended.
How often should I replace my engine anode?
Replacement intervals depend heavily on usage, water conditions (salinity, temperature), and electrical currents. A common practice is to inspect anodes every 3-6 months and replace them at least once a year, or whenever they appear half-eroded.
Can I use this zinc anode in freshwater?
Zinc anodes are specifically formulated for saltwater use. While they are not harmful in freshwater, they may develop a calcareous coating that passivates them, rendering them ineffective. For freshwater, aluminum anodes are generally recommended. For brackish water, aluminum is also a better choice.
What happens if I don't replace a worn-out anode?
A depleted anode can no longer protect the more expensive metal components of your engine's cooling system, like the heat exchanger or aftercooler. This can lead to rapid and severe electrochemical corrosion, causing costly damage and potential engine failure.
What is the difference between an OEM part and this aftermarket part?
This listing is an aftermarket replacement (not OEM). It has been built to meet or exceed OEM-level specifications using comparable high-grade materials. Our parts are manufactured in an ISO 9002 certified facility and are batch-inspected to ensure quality and consistency.
What are the shipping speeds and costs?
We ship worldwide quickly—typical transit time is 5–15 days. Standard shipping is free to most locations, with expedited options available at checkout where applicable.
What is the warranty and return policy?
Our products are covered by a 1-year warranty against manufacturing defects under normal use. Should any issues arise, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their 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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