Cylinder Head Gasket – Fits Volvo Penta D1-20 Engine (Replaces 3886431)
Cylinder Head Gasket – Fits Volvo Penta D1-20 Engine (Replaces 3886431) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Product Details
This high-quality aftermarket Cylinder Head Gasket is designed to fit Volvo Penta D1-20A, D1-20B, and D1-20F diesel engines. It ensures a secure seal between the cylinder head and the engine block, preventing leakage of combustion gases and coolant.
This part is a direct replacement for OEM part number 3886431 and aftermarket equivalent REC3886431.
- Engineered for direct, hassle-free installation.
- Specifically designed for use in diesel marine environments.
- Meets or exceeds original equipment manufacturer specifications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3886431 |
| Aftermarket | REC3886431 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is designed for specific Volvo Penta D1-20 series engines.
| Brand | Model | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Volvo Penta | D1-20A | 4-Stroke | 3886431 | |
| Volvo Penta | D1-20B | 4-Stroke | 3886431 | Engine Category Referenced |
| Volvo Penta | D1-20F | 4-Stroke | 3886431 |
Technical Specs
- Product Type
- Cylinder Head Gasket
- Installation
- Direct replacement
- Fuel Type
- Diesel
- Thickness
- 1.3 mm
- Dimensions
- 25.0 cm x 14.0 cm x 0.1 cm
- OEM Part Number
- 3886431
- Compatibility
- Volvo Penta D1-20 Series Diesel Engines
What’s in the Box
- 1 x Cylinder Head Gasket (3886431)
Installation Notes
- Ensure the engine is completely cool before beginning work. Disconnect the battery.
- Drain the engine coolant and disconnect all relevant hoses, electrical connectors, and exhaust components from the cylinder head.
- Carefully remove the valve cover and the camshaft assembly following the manufacturer's service manual procedures.
- Loosen the cylinder head bolts in the reverse order of the tightening sequence specified in your service manual.
- Lift the cylinder head off the engine block. Do not pry it off, as this can damage the mating surfaces.
- Remove the old head gasket and thoroughly clean both the cylinder head and engine block surfaces. Ensure they are free of any old gasket material, sealant, oil, or debris.
- Place the new gasket onto the engine block, ensuring it is correctly oriented. Do not use any sealant unless explicitly required by the manufacturer.
- Carefully lower the cylinder head back into place over the dowel pins.
- Install the head bolts and tighten them in the specified sequence and torque stages according to your engine's service manual. This is critical for a proper seal.
- Reassemble all other components in the reverse order of removal.
- Refill the cooling system, reconnect the battery, and check for any leaks after starting the engine.
Troubleshooting & FAQ
How do I confirm this gasket fits my exact D1-20 model?
This gasket fits Volvo Penta D1-20A, D1-20B, and D1-20F models. Always verify by cross-referencing your engine's existing part number with OEM number 3886431. Visually compare our product photos with your old part before installation.
What are the common signs of a failed cylinder head gasket?
Symptoms of a blown head gasket include engine overheating, white smoke from the exhaust (burning coolant), milky or frothy engine oil, unexplained coolant loss, and poor engine performance or misfires.
Is this gasket reusable?
No. Cylinder head gaskets are designed for single use only. They crush to form a seal and must be replaced whenever the cylinder head is removed.
Do I need to use sealant with this gasket?
Generally, no sealant should be used on modern head gaskets unless explicitly specified by the engine manufacturer's service manual for your particular model. Applying sealant can interfere with the seal and cause premature failure.
What is the difference between an OEM and aftermarket part?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.
How fast is shipping and what does it cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free, with expedited options available at checkout in most regions.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, 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 contact us 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.
Payment & Security
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