Cork Seal – Fits OMC & Mercruiser Stringer Engines (Replaces 313244, 0313244, 878703)

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Product Details

This Cork Seal – Fits OMC & Mercruiser Stringer Engines (Replaces 313244, 0313244, 878703) is a cork plate seal designed for compatibility with OMC Stringer sterndrive engines and select Mercruiser models. It serves as a crucial component for ensuring a secure seal within the engine assembly.

This part provides a direct interchange for OMC part numbers 313244 and 0313244, as well as Mercruiser 878703.

Material: High-quality cork for reliable sealing.
Function: Sterndrive motor gasket/cork plate seal.
Installation: Drop-in replacement for engine component sealing.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number	Notes
OMC	313244 / 0313244	Original part number may be preceded by a '0' in some documentation.
Mercruiser	878703

Engine & Model Compatibility

Confirm your engine model/year in the table below.

This seal is designed for OMC Stringer sterndrive engines.

Brand	Model	OEM Part No.	Notes
OMC	Stringer Engines	313244 / 0313244	Original part number preceded by 0 in some listings.

Technical Specs

Product Type: Cork Gasket Seal
Installation: Engine component sealing
Fuel Type: Gasoline
Material: Cork
Dimensions: 4.0 in x 5.13 in x 0.13 in
Weight: 0.05 kg (0.11 lb)
Other Technical Attributes: Sterndrive motor gasket/cork plate seal

What’s in the Box

1 x Cork Seal (313244/0313244/878703)

Installation Notes

Ensure the engine is completely cool and disconnect the battery terminals as a safety precaution.
Drain any necessary fluids (like oil or coolant) to prevent spills during disassembly.
Carefully remove the components obstructing access to the old gasket.
Remove the worn-out seal and thoroughly clean both mating surfaces. All old gasket material and residue must be removed for a proper seal.
Position the new cork seal. Unless specified by your engine's service manual, do not use additional sealants with cork gaskets.
Reassemble all components, tightening bolts to the manufacturer's specified torque and in the recommended sequence.
Refill any drained fluids, reconnect the battery, and start the engine. Check carefully for any leaks around the new seal.

Troubleshooting & FAQ

How do I know if this cork seal will fit my engine?

This seal fits OMC Stringer engines and some Mercruiser models that cross-reference part number 878703. The best verification method is to match the part number from your old seal or service manual to the numbers listed: OMC 313244/0313244 or Mercruiser 878703.

What are the signs of a failing cork plate seal?

Common signs include fluid leaks (oil or coolant) around the seal's location, engine overheating, or visible cracking and brittleness of the old gasket material upon inspection.

Can I reuse an old cork seal?

No. Cork seals are single-use components. They compress and conform to the mating surfaces and will not provide a reliable seal if removed and reinstalled.

Does this gasket require a sealant during installation?

Generally, cork gaskets are designed to be installed dry. Applying sealant can sometimes cause the gasket to slip out of place during torquing. Always follow the specific recommendations in your engine's official 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

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