Exhaust Inner Cover Gasket – Fits Yamaha Outboard Motors (Replaces 6G8-41112-02-00)

$7.94 $12.00

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Product Details

This Exhaust Inner Cover Gasket ensures a proper seal for the exhaust system on various Yamaha outboard motors. It is engineered as a direct-fit replacement to prevent exhaust and water leaks, restoring engine integrity and performance.

This part is an interchangeable replacement for Yamaha part numbers 6G8-41112-00-00, 6G8-41112-01-00, and 6G8-41112-02-00. It also serves as a cross-reference for Mercruiser part 6G8-41112-02.

Designed for direct replacement installation.
Made from high-quality materials to ensure a durable seal.
Compatible with all standard marine fuel types.

Part Number Matrix

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

Brand	Part Number	Superseded By	Notes
Yamaha	6G8-41112-02-00		Current OEM Number
Yamaha	6G8-41112-01-00	6G8-41112-02-00	Superseded
Yamaha	6G8-41112-00-00	6G8-41112-01-00	Superseded
Mercruiser	6G8-41112-02		OEM Cross-Reference

Technical Specs

Product Type: Exhaust Inner Cover Gasket
Installation: Direct replacement
Fuel Type: Compatible with all marine fuel types
Connection: Exhaust inner cover mounting
Fitting Type: Direct mount
Dimensions: 13.0" L x 11.5" W x 0.3" H

What’s in the Box

1 x Gasket, Exhaust Inner Cover (Replaces 6G8-41112-02-00)

Installation Notes

Ensure the engine is completely cool and turned off. Disconnect the boat's battery for safety.
Gain access to the engine's exhaust inner cover. This may require removing other components.
Carefully remove the bolts or fasteners securing the cover. Note their positions if they are different lengths.
Remove the old gasket. Take care not to damage the metal surfaces.
Thoroughly clean both the engine block and cover mating surfaces. All old gasket material and corrosion must be removed for a proper seal.
Position the new gasket correctly on the engine block.
Reinstall the cover and tighten the bolts in the sequence and to the torque specifications recommended in your engine's service manual.
Reconnect the battery, start the engine, and carefully check for any exhaust or water leaks around the cover.

Troubleshooting & FAQ

How can I confirm this gasket fits my Yamaha outboard?

The most reliable method is to match the part number. This gasket replaces Yamaha OEM numbers 6G8-41112-02-00, 6G8-41112-01-00, and 6G8-41112-00-00. Since compatible models are not listed, it is critical to verify your old part number or consult a service manual before ordering.

What are the symptoms of a leaking exhaust cover gasket?

Common signs include visible water or exhaust leaks around the engine cover, an unusual hissing sound, engine overheating, or a loss of power. A physical inspection will often reveal carbon tracking, rust, or corrosion at the leak point.

Is sealant or adhesive needed when installing this gasket?

Generally, this gasket is designed to be installed dry onto clean, smooth mating surfaces. Some mechanics apply a very light coat of gasket sealer as a precaution, but you should always consult your engine's official service manual for model-specific recommendations.

What is the difference between the -00, -01, and -02 versions of this Yamaha part?

The numbers indicate revisions made by the original manufacturer over time, usually to improve material or design. 6G8-41112-02-00 is the latest version, which supersedes the older -01-00 and -00-00 parts. Our aftermarket part is built to the specifications of the current version for optimal compatibility and performance.

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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