420950772 Head Gasket for Sea-Doo Speedster 2 x 155 1503 2012

Head Gasket for Sea-Doo Speedster 155 1503

This head gasket for Sea-Doo Speedster 155 1503 replaces OEM part number 420950772 and seals the cylinder head to the engine block, keeping compression where it belongs.

Overview

This head gasket is a direct replacement sealing component for Sea-Doo Speedster 155 1503 watercraft. It sits between the cylinder head and engine block to contain combustion pressure and coolant flow. Anyone rebuilding or servicing a 1503 engine will need this head gasket for Sea-Doo Speedster applications.

Built For Performance

• Constructed to seal combustion chambers under high compression
• OEM cross-reference 420950772 for straightforward matching
• Designed for the 1503 four-stroke engine platform
• Withstands repeated heat cycles from marine use
• Fits both cylinders of the 155 horsepower configuration

Fits These Machines

• for Sea-Doo Speedster 155 1503

On-The-Job Use

• Top-end rebuilds and head gasket replacement
• Compression loss diagnosis and repair
• Scheduled engine maintenance on 1503 powerplants
• Coolant or compression leak correction

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, this is an aftermarket head gasket made to match the 420950772 specification for Sea-Doo applications. Q: Should I replace head bolts at the same time? A: Many engine builders recommend new torque-to-yield head bolts during a head gasket job to ensure proper clamping force.

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