Overhaul Gasket Kit – Fits Volvo Penta AQ125B & AQ145B (Replaces 876448, 876023)
Overhaul Gasket Kit – Fits Volvo Penta AQ125B & AQ145B (Replaces 876448, 876023) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Overhaul Gasket Kit – Fits Volvo Penta AQ125B & AQ145B (Replace...
Product Details
This Overhaul Gasket Kit is designed for 4-cylinder gasoline engines, specifically fitting Volvo Penta AQ125B (117 HP) and AQ145B models. It serves as a lower conversion gasket set, providing essential components to restore sealing integrity around the oil pan.
This kit provides a direct replacement for Volvo Penta part numbers 876448 and 876023, as well as Sierra 18-2997.
- Includes the primary oil pan gasket.
- Contains both front and rear crankshaft seals.
- Engineered to meet or exceed original equipment specifications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 876448 |
| Volvo Penta | 876023 |
| Sierra | 18-2997 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Volvo Penta engines, verify your model is listed. This kit is specific to the "B" variants of the AQ125 and AQ145.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Volvo Penta | AQ125B | 117 | 4-Stroke | 876448/876023 | Oil pan gasket kit |
| Volvo Penta | AQ145B | 4-Stroke | 876448/876023 | Oil pan gasket kit |
Technical Specs
- Product Type
- Overhaul Gasket Kit (Oil Pan Gasket Set)
- Application
- Volvo Penta AQ125B & AQ145B 4-cylinder gasoline engines
- Primary Contents
- Oil pan gasket, front and rear crankshaft seals
- Oil Pan Gasket
- 1378864
- Front Crankshaft Seal
- 1276425
- Rear Crankshaft Seal
- 6842160
- Product Dimensions
- 51.3 cm L x 25.0 cm W x 1.5 cm H
- Warranty
- Standard manufacturer warranty
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
- Disconnect the battery and ensure the engine is cool. Drain the engine oil completely by removing the drain plug.
- Carefully remove the bolts securing the oil pan to the engine block. Note their locations if they are different lengths.
- Gently tap the oil pan with a rubber mallet to break the gasket seal. Lower the pan and remove the old gasket.
- Thoroughly clean both the engine block and oil pan mating surfaces. Remove all old gasket material and oily residue.
- Clean and inspect the crankshaft sealing surfaces. Carefully remove the old front and rear crankshaft seals.
- Lubricate the new crankshaft seals with clean engine oil and install them using an appropriate seal driver. Ensure they are seated evenly.
- Apply a thin, even layer of gasket sealant (if recommended by the service manual) to the engine block's sealing surface.
- Place the new oil pan gasket onto the oil pan, aligning all bolt holes.
- Carefully raise the oil pan into position and start all bolts by hand to avoid cross-threading.
- Tighten the oil pan bolts in a sequence specified by your engine's service manual, working from the center outwards to the recommended torque specification.
- Reinstall the oil drain plug with a new washer and tighten it.
- Refill the engine with the correct type and amount of oil. Reconnect the battery, start the engine, and check for leaks.
Troubleshooting & FAQ
How do I know if this is the right gasket kit for my engine?
This kit is specifically for Volvo Penta AQ125B and AQ145B models. The most reliable way to confirm fitment is by matching your existing part number to one of the cross-references listed in the Part Number Matrix, such as Volvo Penta 876448 or 876023.
What are the signs of a failed oil pan gasket?
Common symptoms include visible oil leaks dripping from the bottom of the engine, a low engine oil level warning light, or the smell of burning oil. You may also see oil residue on the underside of your vessel's engine compartment.
Does this kit include every gasket for a lower engine overhaul?
This is an oil pan gasket set (lower conversion kit), not a complete overhaul kit. It includes the critical oil pan gasket and the front/rear crankshaft seals. Other gaskets for components like the water pump or oil cooler are not included.
Is sealant required for the oil pan gasket?
Refer to your specific Volvo Penta service manual. While some gaskets are designed for dry installation, many applications recommend using a thin bead of RTV silicone sealant at corners or joints (e.g., where the timing cover meets the block) to ensure a leak-proof seal.
Can I reuse my old oil pan bolts?
It is generally acceptable to reuse oil pan bolts if they are in good condition (not stretched, corroded, or damaged). Always clean the threads thoroughly and tighten them to the manufacturer's specified torque sequence and value.
How often should these gaskets and seals be replaced?
These components do not have a fixed replacement interval. They should be replaced whenever the oil pan is removed or if they begin to leak due to age, heat, and material degradation.
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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