420950772 Head Gasket for Sea-Doo GTR 230 1630 2020-2026

Head Gasket for Sea-Doo

This head gasket for Sea-Doo seals the cylinder head to the engine block on the 1630 engine, and it cross-references OEM part number 420950772.

Overview

This head gasket for Sea-Doo is a sealing component that sits between the cylinder head and the engine block to contain combustion pressure and coolant flow. It is built for the 1630 engine used in the GTR 230 platform from 2020 through 2026. Riders and shops replacing a blown or weeping gasket will find this head gasket for Sea-Doo a direct-fit option.

Built For Performance

• Seals combustion chambers against compression loss
• Contains coolant passages between head and block
• Constructed to withstand high cylinder pressures
• Matches OEM cross-reference 420950772
• Designed for the 1630 engine platform

Fits These Machines

• for Sea-Doo GTR 230 1630 (2020-2026)

On-The-Job Use

• Top-end rebuilds after overheating
• Head removal for valve or piston service
• Coolant leak repair at the head joint
• Compression loss diagnosis and repair

Specs At A Glance

Good To Know

Q: Does this gasket require new head bolts? A: Torque-to-yield head bolts should not be reused, so check your service manual before assembly. A: Follow the factory torque sequence and specification for the 1630 engine.

Q: Can I reuse this gasket after removal? A: No, a head gasket is a single-use item and must be replaced once the head is removed. A: Install it dry or per the manual, never with added sealant unless specified.

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