Gasket – Fits Volvo Penta Marine Engines (Replaces 957178)
Gasket – Fits Volvo Penta Marine Engines (Replaces 957178) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Gasket – Fits Volvo Penta Marine Engines (Replaces 957178)
Product Details
This replacement Gasket – Fits Volvo Penta Marine Engines (Replaces 957178) is designed for a precise fit in various diesel marine engines, including the D42A series fuel systems. It ensures a reliable seal for critical fuel line connections.
This part directly interchanges with Volvo Penta part numbers 957178 and 947621.
- Offers direct fit installation, requiring no modifications.
- Specifically engineered for diesel fuel system applications.
- Functions as a hollow screw sealing gasket to prevent fuel leaks.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 957178 |
| Volvo Penta | 947621 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is used in the fuel systems of the following Volvo Penta diesel engines.
| Brand | Model | OEM Part No. | Notes |
|---|---|---|---|
| Volvo Penta | D42A | 957178 | Used in fuel system |
Technical Specs
- Product Type
- Gasket
- Installation
- Direct fit
- Fuel Type
- Diesel
- Connection
- Fuel system fitting
- Dimensions
- 12.0 x 8.0 x 0.5 cm
- Weight
- 0.004 kg (0.009 lb)
- Fitting Type
- Hollow screw sealing gasket
- Other Technical Attributes
- Used in fuel system applications
What’s in the Box
- 1 x Gasket (957178/947621)
Installation Notes
- Turn off the engine and disconnect the battery for safety.
- Shut off the fuel supply valve and carefully relieve any pressure in the fuel system.
- Identify and access the location of the old gasket.
- Remove the associated fittings and take out the old gasket.
- Thoroughly clean the mating surfaces to ensure they are free from old material and debris.
- Place the new gasket into position, ensuring it is properly aligned.
- Reinstall the fittings and tighten them to the manufacturer's recommended torque specifications.
- Restore the fuel supply, reconnect the battery, and prime the fuel system if necessary.
- Start the engine and carefully inspect for any signs of fuel leaks around the new gasket.
Troubleshooting & FAQ
How do I know if this gasket will fit my engine?
This gasket is designed for Volvo Penta marine diesel engines like the D42A series. The best way to confirm is to cross-reference your old part's number with the listed equivalents: 957178 and 947621. Also, visually compare your part with the product images.
What are the signs of a failing fuel gasket?
Common symptoms include visible fuel leaks or weeping around the connection, a strong diesel odor in the engine bay, poor engine performance, hesitation, or difficulty starting due to air entering the fuel system.
Should I use sealant with this gasket?
This type of sealing gasket is typically installed dry. Applying sealants can sometimes interfere with proper sealing or contaminate the fuel system. Always consult your engine's official service manual for specific procedures.
How often should this part be replaced?
This gasket should be replaced any time the component it seals is removed or disassembled. It's also wise to replace it immediately if you notice any signs of leaks or material degradation during inspections.
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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