Gasket – Fits Outboard Marine Corp (Replaces 319174)

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Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This aftermarket Gasket – Fits Outboard Marine Corp (Replaces 319174) is designed to provide a reliable seal for specific Outboard Marine Corp (OMC) applications. Manufactured as a direct replacement for part number 319174, it ensures proper performance and prevents leaks in packing and gasket assemblies.

Part Number Matrix

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

Brand	Part Number	Notes
Outboard Marine Corp (OMC)	319174	NSN: 5330-00-340-5278; CAGE: 80256

Technical Specs

Product Type: Gasket
Dimensions: 27.5" L x 19.0" W x 0.5" H
Manufacturer: Outboard Marine Corp
National Stock Number (NSN): 5330-00-340-5278

What’s in the Box

1 x Gasket (319174)

Installation Notes

Ensure the engine is off and cool. Disconnect the battery for safety.
Carefully access and remove the component requiring the new gasket.
Remove the old gasket completely. Thoroughly clean and degrease both mating surfaces to ensure a perfect seal.
Position the new gasket correctly. Ensure all bolt holes and passages are properly aligned.
Reassemble the component, tightening fasteners to the manufacturer's recommended torque specifications in the correct sequence.
After installation, reconnect the battery, start the engine, and carefully check for any leaks around the newly sealed area.

Troubleshooting & FAQ

How do I confirm this gasket fits my specific engine?

The most reliable method is to match part number 319174 to the one listed in your engine's service manual. Since specific model compatibility is not provided, visual comparison with your old gasket is also highly recommended.

What are common signs of a failed gasket?

Symptoms of a bad gasket can include visible fluid leaks (oil, coolant, or fuel), overheating, loss of compression, or poor engine performance. Any residue or staining around the sealing area is a key indicator.

Do I need to use a sealant or adhesive with this gasket?

This depends on the specific application and your service manual's recommendations. Some gaskets are designed to be installed dry, while others require a thin layer of a specific type of sealant. Always consult your manual for the correct procedure.

Can I reuse an old gasket?

No. Gaskets are single-use components designed to crush and conform to create a seal. Once compressed and heat-cycled, they lose their ability to seal effectively and must be replaced whenever a component 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.

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