Exhaust Cover Gasket – Fits Yamaha 40HP Outboard (Replaces 6F5-41114-A0)

$4.50 $7.00

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Exhaust Cover Gasket – Fits Yamaha 40HP Outboard (Replaces 6F5-41114-A0) is backordered and will ship as soon as it is back in stock.

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Product Details

This replacement Exhaust Cover Gasket is engineered to fit Yamaha 40HP 2-Stroke outboard C Model series engines manufactured between 1984 and 1997. It provides a reliable seal for the exhaust system, preventing leaks and ensuring optimal engine performance.

It serves as a direct interchange for OEM part numbers 6F5-41114-00, 6F5-41114-01, and 6F5-41114-A0.

Installation: Direct replacement fit requires no modifications.
Construction: Made from a premium asbestos-free composite for durability in marine environments.
Package Includes: One exhaust outer cover gasket.

Part Number Matrix

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

Brand	Part Number	Notes
Yamaha	6F5-41114-A0	Current part number
Yamaha	6F5-41114-01	Superseded by 6F5-41114-A0
Yamaha	6F5-41114-00	Superseded by 6F5-41114-01

Engine & Model Compatibility

Confirm your engine model/year in the table below.

This gasket is designed for specific Yamaha 40 HP two-stroke models. Verify your engine series is listed before ordering.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.	Notes
Yamaha	E40G	40	2-Stroke	1984–1997	6F5-41114-A0	Also fits 6F5-41114-00/01
Yamaha	E40J	40	2-Stroke	1984–1997	6F5-41114-A0	Also fits 6F5-41114-00/01
Yamaha	40HP C Models	40	2-Stroke	1984–1997	6F5-41114-A0	Old C model designation

Technical Specs

Product Type: Exhaust Outer Cover Gasket
Installation: Direct replacement fit
Fuel Type: Gasoline
Housing Material: Premium heat/pressure/chemical-resistant material
Dimensions: 25.5 cm L × 14.8 cm W × 0.4 cm H
Weight: Approximately 0.2 kg (0.44 lb)
Operating Temperature: Marine environment rated
Warranty: Varies by manufacturer (typically 1 year)
Other Technical Attributes: Asbestos-free construction

What’s in the Box

1 x Gasket, Exhaust Outer Cover (6F5-41114-A0)

Installation Notes

Ensure the engine is off and cool, and disconnect the battery for safety.
Locate and carefully remove the bolts securing the exhaust outer cover.
Remove the old gasket and thoroughly clean any residue from both the cover and the engine block mating surfaces. A clean, smooth surface is critical for a proper seal.
Position the new gasket onto the engine block, aligning it with the bolt holes.
Reinstall the exhaust cover and tighten the bolts in a crisscross pattern to the torque specified in your engine's service manual. Do not overtighten.
Reconnect the battery, start the engine, and carefully check for any exhaust or water leaks around the cover.

Troubleshooting & FAQ

How do I know if this gasket fits my Yamaha engine?

This gasket is specifically for Yamaha 40HP 2-Stroke C Model engines made from 1984–1997. Check the compatibility table and ensure your OEM part number matches 6F5-41114-A0 or its predecessors.

What are the signs of a failing exhaust cover gasket?

Common symptoms include a visible exhaust or water leak around the cover, an unusual hissing or popping sound from the engine, reduced performance, or engine overheating. A visual inspection often reveals soot or water trails.

Should I use sealant when installing this gasket?

This gasket is designed to be installed dry. Applying sealants is generally not recommended as it can cause improper sealing. Always refer to your outboard's official service manual for model-specific instructions.

How does this aftermarket gasket compare to an OEM part?

This part is an aftermarket replacement, not OEM. It's built to meet or exceed OEM-level specifications with comparable, high-quality, asbestos-free materials. It offers a direct fit and reliable performance at a better value.

What is the recommended replacement interval?

Exhaust gaskets should be replaced whenever the component they seal is removed. They are typically single-use parts. Inspect them during regular service intervals and replace immediately if any signs of wear, brittleness, or leakage are found.

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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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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