Gasket – Fits Volvo Penta MD31A (Replaces 947084)
Gasket – Fits Volvo Penta MD31A (Replaces 947084) is backordered and will ship as soon as it is back in stock.
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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.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Gasket – Fits Volvo Penta MD31A (Replaces 947084)
Product Details
This factory replacement gasket for Volvo Penta MD31A series marine diesel engines provides a reliable seal for various engine applications. It is engineered to meet or exceed original equipment specifications for a precise fit and durable performance.
This part is a direct replacement for Volvo Penta part numbers 947084 and the superseded 3875390.
- Installation Type: Direct replacement
- Fuel Compatibility: Diesel
- Component in repair kits: 875704
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Volvo Penta | 947084 | Supersedes 3875390 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Volvo Penta | MD31A | 4-Stroke | 947084 | Found in Miscellaneous/Repair Kits |
Technical Specs
- Product Type
- OEM Gasket
- Installation
- Direct replacement
- Fuel Type
- Diesel
- Dimensions
- 10.0" L x 10.0" W x 0.2" H
- Warranty
- Manufacturer standard warranty
- Other Technical Attributes
- Component in repair kits: 875704
What’s in the Box
- 1 x Gasket (947084)
Installation Notes
- Ensure the engine is off and cool. Disconnect the battery and close the fuel supply valve.
- Drain any fluids (like coolant or oil) from the system as required to access the gasket area.
- Carefully remove the components covering the old gasket. Keep track of all fasteners.
- Remove the old gasket. Use a plastic scraper to avoid gouging the metal surfaces.
- Thoroughly clean both mating surfaces. Ensure they are completely free of old gasket material, oil, and debris.
- Position the new gasket correctly; do not use any sealant unless specified by the engine manufacturer.
- Reinstall the components, tightening bolts in the sequence and to the torque specifications recommended by the manufacturer.
- Refill engine fluids, reconnect the battery, and check for leaks after starting the engine.
Troubleshooting & FAQ
How do I confirm this gasket fits my engine?
This gasket is designed for the Volvo Penta MD31A model. The most reliable way to confirm fitment is by matching the part number 947084 or the superseded number 3875390 with your engine's service manual.
What are the signs a gasket needs replacement?
Common signs of a failed gasket include fluid leaks (oil, coolant), engine overheating, loss of compression, or visible cracks and brittleness on the old gasket during an inspection.
Do I need sealant with this gasket?
Generally, new gaskets are designed to be installed dry. Applying sealants can sometimes cause the gasket to slip or fail prematurely. Always follow the specific instructions in your Volvo Penta service manual.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in 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.
Payment & Security
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