420950772 Head Gasket for Sea-Doo Cruise 21-170 1630 2022-2025

Head Gasket for Sea-Doo

This head gasket seals the cylinder head to the engine block on select Sea-Doo personal watercraft, cross-referencing OEM part number 420950772 for a precise fit.

Overview

This head gasket is a direct-fit sealing component for the Rotax 1630 engine used in Sea-Doo personal watercraft. It maintains compression and keeps coolant and oil separated at the cylinder head mating surface. Built for riders and mechanics servicing Sea-Doo 1630-powered models who need a reliable replacement head gasket.

Built For Performance

• Multi-layer steel construction for consistent sealing under high compression
• Precision-cut to match OEM part number 420950772
• Withstands the heat cycling typical of marine engine operation
• Resists coolant and oil exposure for long service life
• Designed for the Rotax 1630 engine platform

Fits These Machines

• for Sea-Doo Cruise 21-170 1630, 2022-2025

Specs At A Glance

Good To Know

Q: Does this gasket require new head bolts during installation? A: Many marine engine rebuilds call for fresh torque-to-yield bolts, so check your service manual before reinstalling the cylinder head. Q: Is this an original Sea-Doo part? A: This is an aftermarket replacement head gasket made to cross-reference OEM part number 420950772, and it is not an original Sea-Doo product.

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