420950772 Head Gasket for Sea-Doo Sportster 155 1503 2003-2006

Head Gasket for Sea-Doo Sportster 155 1503

This head gasket for Sea-Doo seals the cylinder head to the engine block on the 1503 engine used in the Sportster 155, cross-referencing 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. It is built for the 1503 engine found in the Sportster 155, referencing OEM 420950772. This head gasket for Sea-Doo suits riders and mechanics refreshing a top end.

Built For Performance

• Direct cross-reference to OEM part number 420950772
• Designed for the 1503 four-stroke engine platform
• Seals combustion chambers and coolant passages
• Handles the cylinder pressures of the 1503 engine
• Suits cylinder head removal and rebuild work

Fits These Machines

• for Sea-Doo Sportster 155 1503, 2003-2006

On-The-Job Use

• Top end rebuilds after head gasket failure
• Cylinder head removal and reinstallation
• Routine maintenance on the 1503 engine
• Shop repairs on the Sportster 155

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, this is an aftermarket head gasket that cross-references OEM 420950772. Always confirm your engine and part number before ordering.

Q: Can I reuse a head gasket? A: Head gaskets are single-use and should be replaced any time the cylinder head is removed. Reusing a compressed gasket risks sealing failure.

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