Volvo Penta Unit Injector 3803637 / 20929906 for D12C, D12D Series
Product Summary
This is an electronic unit injector (EUI) for Volvo Penta D12 series marine and industrial diesel engines, specifically covering D12C, D12D, D12D340, D12D380, D12D420, and D12D460 models. Part numbers 3803637 and 20929906 are interchangeable, and cross-reference number 21371673 is also compatible. The injector integrates the high-pressure fuel pump, solenoid valve, and nozzle into a single unit for precise fuel delivery. It features a chrome alloy exterior for durability. We supply this injector as genuine OEM (made to order, uncertain lead time) and new aftermarket ($150 in stock). Both conditions carry a 12-month warranty. Fitment must be confirmed using your engine model and current part number.
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Product Function
The electronic unit injector combines the high-pressure pump, solenoid valve, and injection nozzle into one assembly. The engine ECU controls the solenoid to pressurize and inject fuel at the precise moment and in the exact quantity required for each cylinder. The chrome alloy exterior provides enhanced corrosion resistance and durability, important in marine and industrial environments. A faulty injector can cause rough idle, power loss, excessive smoke, increased fuel consumption, or engine misfire. Regular inspection and replacement according to the engine’s maintenance schedule are essential.
Compatibility Information
Confirmed for the following Volvo Penta D12 series engine models:
- D12C
- D12D
- D12D340
- D12D380
- D12D420
- D12D460
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Product Information Table
| Field | Details |
|---|---|
| Brand | Volvo Penta |
| Product Name | Unit Injector (Fuel Injector) |
| Part Numbers | 3803637, 20929906 (interchangeable) |
| Cross-reference Number | 21371673 (interchangeable) |
| Product Condition | Genuine OEM or Aftermarket |
| Compatible Engine Models | Volvo Penta D12C, D12D, D12D340, D12D380, D12D420, D12D460 (marine & industrial diesel) |
| Application | Electronic unit injection system |
| Unit Type | Electronic Unit Injector (EUI) |
| Exterior Finish / Material | Chrome alloy |
| Weight | To be confirmed |
| Fuel Compatibility | Standard marine or industrial light diesel |
| Place of Origin | To be confirmed |
| Warranty | 12 months (both OEM and aftermarket) |
| Availability | OEM: made to order, lead time uncertain; Aftermarket: in stock |
| Packaging | Foam-lined cardboard box |
Price Information: Aftermarket injector is listed at approximately 150 USD per unit, subject to final confirmation at the time of order.
Product Condition Options
Genuine OEM
Original Volvo Penta factory injector. Availability: made to order; lead time is currently uncertain. Please contact us to check current supply status before ordering.
Aftermarket (Chinese-made replacement)
New, high-quality replacement injector manufactured to match OEM specifications. In stock, ready for dispatch. Offered at approximately 150 USD per unit, subject to final quotation. A reliable and cost-effective alternative.
Packaging, Shipping & Warranty
- Packaging: Foam-lined cardboard box for protection during transit.
- Shipping: Worldwide shipping. Cost and transit time depend on destination and selected carrier.
- Warranty: 12 months for both genuine OEM and aftermarket units. Full warranty terms are issued with the quotation.
- Important: Availability, pricing, and delivery time must be reconfirmed at the time of order. Aftermarket units are typically dispatched within 3–5 days; OEM units are subject to supplier lead time.
How to Request a Quote
To request a quote, please provide:
- Engine brand and exact model
- Serial number / year
- Current part number from your injector
- Photo of the existing injector (if available)
- Required quantity
- Preferred condition: Genuine OEM or Aftermarket
- Destination country
Part numbers 3803637 and 20929906, as well as cross-reference 21371673, are interchangeable. Always verify using your engine serial number and existing injector part number before ordering.
Click the “Request Quote” button or email us directly. Include the details listed in the Compatibility Information section above. We respond within 24 hours.
Why Choose Us?
✅ Global Dynapac Parts Supplier – Fast shipping from multiple warehouses
✅ Quality Guaranteed – Original Dynapac packaging
✅ Technical Support – Compaction experts available
