420950772 Head Gasket for Sea-Doo RXP X 255 1503 2008-2011

Head Gasket for Sea-Doo RXP X 255

This head gasket is a sealing component for the Sea-Doo RXP X 255 1503 engine, designed to seal the junction between the cylinder head and engine block and referencing OEM cross-reference 420950772.

Overview

This head gasket for Sea-Doo is a direct-fit sealing component for the 1503 engine used in the RXP X 255 platform. It seals the cylinder head to the engine block to maintain compression and keep coolant and oil passages contained under operating pressure. Built for riders and mechanics servicing 2008 through 2011 Sea-Doo RXP X 255 watercraft, this head gasket helps restore a reliable seal during top-end rebuilds.

Built For Performance

• Cross-references OEM part number 420950772 for straightforward matching
• Constructed to withstand the high compression and heat of the 1503 engine
• Seals the cylinder head to block junction to preserve combustion pressure
• Helps contain coolant and oil passages under load
• Suited to top-end rebuild and gasket replacement work

Fits These Machines

• for Sea-Doo RXP X 255 1503, model years 2008 to 2011

On-The-Job Use

• Top-end rebuilds after a blown or weeping head gasket
• Cylinder head removal and reinstallation service
• Compression restoration work on the 1503 engine
• Routine teardown and inspection of the cylinder head

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is an aftermarket head gasket that cross-references OEM number 420950772. It is not an original Sea-Doo product.

Q: Should the head bolts be replaced at the same time? A: Torque-to-yield head bolts are often single-use, so check the service manual for your 1503 engine. Following the correct torque sequence is critical for a proper seal.

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