420950772 Head Gasket for Sea-Doo Base 19-170 1630 2022-2025

Head Gasket for Sea-Doo

This head gasket, part number 420950772, seals the cylinder head to the engine block on 1630 cc Sea-Doo watercraft to keep compression contained and coolant where it belongs.

Overview

This head gasket for Sea-Doo is a direct-fit sealing component for the 1630 engine platform used in Base 19-170 models from 2022 through 2025. It maintains the combustion seal between head and block so compression stays consistent and coolant stays inside its passages. Riders and mechanics performing top-end service will find this head gasket a straightforward replacement for a blown or weeping original.

Built For Performance

• Fits the 1630 cc Sea-Doo engine platform
• Replaces OEM part number 420950772
• Seals combustion pressure between head and cylinder block
• Keeps coolant separated from combustion gases
• Structured for marine engine torque and heat cycles

Fits These Machines

• for Sea-Doo Base 19-170 1630, 2022-2025

On-The-Job Use

• Top-end rebuilds and head removal service
• Repairing coolant leaks at the head joint
• Restoring lost compression after gasket failure
• Routine maintenance on 1630 cc Sea-Doo watercraft

Specs At A Glance

Good To Know

Q: Does this head gasket come as a single unit? A: Yes, this listing is for one head gasket, part number 420950772. Pair it with new head bolts and fresh coolant when completing the job.

Q: Can I reuse a head gasket after removing the head? A: No, a head gasket is a single-use sealing component and should always be replaced once the head is removed. Reusing one risks leaks and compression loss.

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