420950772 Head Gasket for Sea-Doo GTR-X 300 1630 2024-2026

Head Gasket for Sea-Doo GTR-X 300 1630

This head gasket is a sealing component that fits between the cylinder head and engine block on the Sea-Doo GTR-X 300 1630, and it carries OEM cross-reference 420950772.

Overview

This head gasket is built to seal the combustion chamber on the Sea-Doo GTR-X 300 1630, keeping compression contained and coolant where it belongs. It serves riders and mechanics performing top-end service who need a dependable replacement gasket that matches OEM reference 420950772. Installing a fresh head gasket during a rebuild helps restore proper sealing for the Sea-Doo GTR-X 300 1630 engine.

Built For Performance

• Multi-layer construction designed to withstand high combustion pressures
• Precise cutouts matched to head bolt and coolant passage locations
• Heat-resistant material suited to the 1630 engine platform
• OEM cross-reference 420950772 for confident matching
• Seals combustion gases and coolant at the head-to-block joint
• Stable torque retention after heat cycling

Fits These Machines

• for Sea-Doo GTR-X 300 1630 (2024-2026)

On-The-Job Use

• Top-end rebuilds after overheating or gasket failure
• Cylinder head removal and reinstallation service
• Compression loss diagnosis and repair
• Seasonal engine refresh on the GTR-X 300

Specs At A Glance

Good To Know

Q: Should head bolts be replaced with the gasket? A: Many torque-to-yield head bolts are single-use, so check your service manual and replace them if specified when installing this gasket.

Q: Is sealant required on this gasket? A: Most modern multi-layer head gaskets go on dry, so follow the service manual rather than adding sealant that can interfere with sealing.

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