Sierra 18-2716 Exhaust Cover Gasket

The Sierra 18-2716 Exhaust Cover Gasket is a replacement gasket designed for Mercury 2-cylinder 2-stroke outboards. This gasket seals the exhaust cover to the engine block, preventing exhaust and water leaks while maintaining proper engine performance.

Fitment Overview

This gasket replaces Mercury OEM part numbers 414991, 41499, and 92332. These OEM numbers are used across Mercury 2-cylinder outboards in the 15HP through 25HP range, including standard and commercial-duty models.

OEM diagram lookup confirms this gasket is used on multiple engine variations that share the same exhaust cover design and mounting pattern.

Compatibility

These engines share a common exhaust cover design where this gasket is used.

Example Model Applications

• Mercury 15HP and Super 15 outboards
• Mercury 18XD models
• Mercury 20HP, 20XD, and 20 Jet models
• Mercury 25HP and 25XD outboards
• Mercury Sea Pro and Marathon commercial models

These are common applications. Always verify using your OEM part number or engine diagram.

Fits These Serial Ranges

This gasket is used across multiple Mercury 2-cylinder engine generations and does not follow a single serial-number break.

Important: Confirm compatibility by matching your existing gasket to 414991, 41499, or 92332.

Looking for the OEM Mercury version of this gasket?
View OEM Mercury Exhaust Cover Gasket 414991

Part Numbers and Cross References

What This Part Is Used For

This gasket seals the exhaust cover to the engine block, preventing exhaust gas and cooling water leaks while maintaining proper engine function.

• Seals exhaust cover to engine block
• Prevents exhaust and water leaks
• Maintains proper cooling flow
• Supports overall engine efficiency

A failed gasket can lead to exhaust leakage, overheating, or reduced engine performance.

System Function and Connections

• System Type: Exhaust system
• Component Type: Exhaust cover gasket
• Location: Between exhaust cover and engine block

FAQ

What engines does this gasket fit?
It fits Mercury 15HP through 25HP 2-cylinder 2-stroke outboards, including commercial models.

What does this replace?
It replaces Mercury part numbers 414991, 41499, and 92332.

Does this fit Sea Pro or Marathon models?
Yes, it fits Sea Pro and Marathon versions using this exhaust cover design.

How do I confirm fitment?
Match your existing gasket to the OEM numbers or verify using your engine diagram.

Searchable Part Numbers

18-2716, 414991, 41499, 92332, Mercury 25HP gasket, Mercury 2-cylinder exhaust gasket