420950772 Head Gasket for Sea-Doo Cruise 18-170 1630 2022-2026

Head Gasket for Sea-Doo

This head gasket for Sea-Doo personal watercraft seals the cylinder head to the engine block on the 1630 engine, preserving compression and preventing coolant and oil from crossing the head joint.

Overview

This head gasket for Sea-Doo is a sealing component made for the 1630 engine found in the Cruise 18-170 platform from 2022 through 2026. It seals the head-to-block mating surface so combustion pressure and coolant stay contained during operation. It suits riders and mechanics rebuilding or repairing a Sea-Doo 1630 top end.

Built For Performance

• Precision-formed sealing surface for even clamp load across the cylinder head
• Built to handle the heat cycling of a marine 1630 engine
• Seals coolant and combustion gases at the head-to-block joint
• Direct replacement for OEM part 420950772
• Matches the 1630 displacement engine used in the Cruise 18-170

Fits These Machines

• for Sea-Doo Cruise 18-170, 2022-2026

On-The-Job Use

• Top-end rebuilds on the 1630 engine
• Fixing coolant seepage at the cylinder head joint
• Restoring compression lost to a failed head gasket
• Scheduled engine service on a Sea-Doo Cruise 18-170

Specs At A Glance

Good To Know

Q: Will this work on my 2022 Sea-Doo Cruise 18-170? A: It is listed for the Cruise 18-170 with the 1630 engine from 2022 to 2026, but engine and serial number differences can affect fit, so verify your model first.

Q: Should I replace the head gasket after removing the cylinder head? A: Yes, head gaskets are not reusable, so fit a new one any time the head is removed or a leak develops.

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