Powerhead Gasket – Fits Evinrude Johnson OMC (Replaces 335419/0335419)

$10.79

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Product Details

This Powerhead Gasket – Fits Evinrude Johnson OMC (Replaces 335419/0335419) is designed for a wide range of Evinrude, Johnson, and OMC outboard motors. It serves as a crucial sealing component for the engine's powerhead assembly, ensuring a reliable barrier against compression loss and water intrusion.

It is a direct replacement for OEM part numbers 335419 and 0335419.

New factory part ensures reliable performance and fit.
Engineered to meet or exceed original equipment specifications for sealing and durability.
Essential for engine overhauls or when addressing compression or leakage issues.

Part Number Matrix

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

Brand	Part Number
OMC	335419
OMC	0335419

Engine & Model Compatibility

Confirm your engine model/year in the table below.

This powerhead gasket is compatible with various Evinrude, Johnson, and OMC models. As specific compatibility varies by horsepower and year, always verify the part number against your engine's service manual.

Brand	OEM Part No.	Notes
Evinrude	335419	Powerhead gasket
Johnson	335419	Powerhead gasket
OMC	335419	Powerhead gasket

Technical Specs

Product Type: Powerhead Gasket
Manufacturer Part Number: 335419 / 0335419
Other Technical Attributes: OEM New Factory Parts
Product Dimensions: 30.0" L x 21.5" W x 0.4" H

What’s in the Box

1 x Powerhead Gasket (335419/0335419)

Installation Notes

Ensure the engine is off, cool, and disconnected from the battery.
Drain the cooling system to prevent spills.
Carefully disconnect all linkages, hoses, and electrical wiring from the powerhead.
Unbolt and remove the powerhead from the engine's drive shaft housing.
Remove the old powerhead gasket and thoroughly clean both mating surfaces. Scrape away all old gasket material and residue.
Inspect the powerhead and housing surfaces for warping or damage. Ensure they are perfectly flat and clean.
Position the new gasket correctly. Do not use any sealant unless explicitly required by your service manual.
Carefully lower the powerhead back into place.
Tighten the powerhead bolts in the sequence and to the torque values specified by the manufacturer. This is critical for an even seal.
Reconnect all wiring, hoses, and linkages.
Refill the cooling system, check for leaks, and test run the engine.

Troubleshooting & FAQ

How do I know if my powerhead gasket is failing?

Common signs include loss of compression in one or more cylinders, water intrusion into the cylinders (causing misfires or steam from the exhaust), milky-looking oil (in 4-stroke models), or the engine overheating.

Is any sealant required when installing this gasket?

Most modern gaskets are designed to be installed dry on clean, flat surfaces. Applying sealant can sometimes interfere with the seal. Always follow the specific instructions in your engine's official service manual.

What is the most common cause of premature powerhead gasket failure?

The leading causes are improper installation (incorrect torque sequence or value), warped or dirty mating surfaces, and engine overheating, which can cause the head to warp and compromise the seal.

Can I reuse a powerhead gasket?

No. Powerhead gaskets are single-use components that crush to create a seal. Once compressed and heat-cycled, they will not seal correctly a second time, leading to guaranteed leaks.

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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