66E-11181-00-00 Head Gasket for Yamaha GP-R 800 2003-2005 GP-R800

Head Gasket for Yamaha GP-R 800

This head gasket seals the cylinder head to the engine block on Yamaha GP-R 800 personal watercraft, cross-referencing OEM part number 66E-11181-00-00.

Overview

This head gasket is a direct-fit sealing component for the Yamaha GP-R 800, designed to maintain compression between the cylinder head and engine block. It replaces the factory gasket referenced under OEM number 66E-11181-00-00, helping restore a proper combustion seal on 2003-2005 GP-R800 models. Ideal for riders and mechanics performing top-end rebuilds or routine engine maintenance.

Built For Performance

• Precision-cut to match OEM 66E-11181-00-00 dimensions
• Constructed to withstand high combustion temperatures and pressure
• Provides a reliable seal between cylinder head and block
• Helps maintain consistent engine compression
• Direct replacement fit for 2003-2005 GP-R 800 models

Fits These Machines

• for Yamaha GP-R 800 (2003-2005)
• for Yamaha GP-R800

On-The-Job Use

• Top-end engine rebuilds on GP-R 800 watercraft
• Cylinder head removal and reinstallation jobs
• Routine engine maintenance and compression restoration
• Marine repair shops servicing Yamaha two-stroke engines

Specs At A Glance

Good To Know

Q: Does this gasket come with new head bolts? A: This listing includes the head gasket only. Check your service manual for head bolt reuse or replacement recommendations.

Q: Can I reuse this gasket after removing the cylinder head? A: Head gaskets are designed for single use. Replace with a new gasket anytime the cylinder head is removed.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.