Oil Pan Gasket Set – Fits Volvo Penta 230, 250, AQ131, AQ151, AQ171 (Replaces 876304)
Oil Pan Gasket Set – Fits Volvo Penta 230, 250, AQ131, AQ151, AQ171 (Replaces 876304) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
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).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Oil Pan Gasket Set – Fits Volvo Penta 230, 250, AQ131, AQ151, AQ171...
Product Details
This Oil Pan Gasket Set – Fits Volvo Penta 230, 250, AQ131, AQ151, AQ171 (Replaces 876304) is designed for a wide range of Volvo Penta 4-cylinder and 6-cylinder gasoline marine engines, covering models from approximately 1967 to 1993. It serves as a comprehensive conversion kit for restoring a reliable seal on the engine's oil pan.
This kit is a direct replacement for Volvo Penta 876304, Sierra ORB21304, and AM876304.
- Engineered for direct replacement and installation.
- Designed for gasoline-fueled marine engines.
- Includes the oil pan gasket and essential front and rear crankshaft seals.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 876304 |
| Sierra | ORB21304 |
| AM | AM876304 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This set is designed for the following Volvo Penta models:
| Brand | Model | Stroke | OEM Part No. |
|---|---|---|---|
| Volvo Penta | AQ131A, B, C, D | 4-Stroke | 876304 |
| Volvo Penta | AQ151A, B, C | 4-Stroke | 876304 |
| Volvo Penta | 171A, C | 4-Stroke | 876304 |
| Volvo Penta | 230A, B | 4-Stroke | 876304 |
| Volvo Penta | 250A, B | 4-Stroke | 876304 |
| Volvo Penta | 251A | 4-Stroke | 876304 |
Technical Specs
- Product Type
- Oil Pan Gasket Set / Conversion Gasket Kit
- Installation
- Direct replacement
- Fuel Type
- Gasoline
- Housing Material
- Various (rubber, cork, paper)
- Dimensions
- 78.0" x 27.0" x 3.5"
- Other Technical Attributes
- Includes oil pan gasket and front/rear crankshaft seals
What’s in the Box
- 1 x Oil Pan Gasket (1378864)
- 1 x Front Crankshaft Seal (1276425)
- 1 x Rear Crankshaft Seal (6842160)
Installation Notes
- Ensure the engine is cool. Disconnect the battery and drain the engine oil completely.
- Carefully remove any components obstructing access to the oil pan, then unbolt and remove the oil pan itself.
- Remove the old oil pan gasket and the front and rear crankshaft seals.
- Thoroughly clean the mating surfaces on both the engine block and the oil pan, ensuring they are free of old gasket material, oil, and grime.
- Install the new front and rear crankshaft seals according to your engine's service manual.
- Position the new oil pan gasket on the clean oil pan.
- Reinstall the oil pan, tightening the bolts in the sequence and to the torque specifications recommended by the manufacturer.
- Refill the engine with the correct type and amount of new oil, and reconnect the battery.
Troubleshooting & FAQ
How do I know if this gasket set is correct for my engine?
This set fits a range of Volvo Penta 4-cylinder and 6-cylinder gasoline engines. The best way to ensure compatibility is to cross-reference your existing part number with those listed in the Part Number Matrix (876304, ORB21304, AM876304) and check your engine model against the compatibility table.
What are the signs of a failing oil pan gasket?
Common signs include visible oil leaks or drips under the engine, low engine oil levels without other obvious causes, and oil smoke or a burning oil smell from the engine bay as oil drips onto hot exhaust components.
Is this a complete kit for the oil pan seal?
Yes, this is a conversion gasket kit that includes the main oil pan gasket as well as the front and rear crankshaft seals, which are critical for a complete and leak-free repair.
How often should an oil pan gasket be replaced?
There is no fixed replacement interval. Gaskets should be replaced when they show signs of leaking or degradation, or during any major engine overhaul where the oil pan is removed.
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
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
