Volvo Penta Zinc Anode 838929
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You have 30 days to request a return. All sale items are final sale.
The Volvo Penta 838929 is a zinc pencil anode designed to protect internal engine cooling system components from galvanic corrosion. Installed inside heat exchangers, oil coolers, and water jackets, this anode sacrifices itself to prevent corrosion damage to critical engine parts.
Zinc is specifically intended for saltwater applications, where it provides reliable and predictable corrosion protection.
Key Features
- OEM Volvo Penta replacement part (838929)
- Pencil-style zinc anode
- Protects internal cooling system components
- Designed for saltwater use
- Direct replacement for factory-installed anodes
Engine Compatibility
Fits a wide range of Volvo Penta engines, including:
- D4, D6, D9, D11 series
- MD, TMD, TAMD engine families
- 2000-series diesel engines
✔ Commonly used in:
- Heat exchangers
- Oil coolers
- Aftercoolers
Specifications
- Length: approx. 1-3/4"
- Diameter: approx. 9/16"
- Thread: 7/16" UNC external / M8 internal
- Weight: ~0.10 lbs
When This Part Needs Replacement
- Anode is 50% consumed or more
- Heavy pitting or scaling
- During annual service (recommended in saltwater)
- Cooling system corrosion signs
Installation Notes
- Install inside designated cooling system port
- Ensure proper thread engagement
- Use non-insulating sealant if required
- Inspect regularly (especially in saltwater use)
Alternate / Cross-Reference Part Numbers
- Volvo Penta: 838929
- Martyr: CM838929Z
- Sierra: 18-6001
Parts Desk Insight
If these pencil anodes are neglected, corrosion starts inside the engine, often damaging heat exchangers and coolers—one of the most expensive failures on Volvo diesel systems. These are small parts with big protection value.
Shipping
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
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Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.