420950772 Head Gasket for Sea-Doo RXT STDRS 260 1503 2017

Head Gasket for Sea-Doo

This head gasket is a sealing component that fits between the cylinder head and engine block on the 1503 engine, manufactured to OEM 420950772 specifications for a precise, dependable seal.

Overview

The head gasket for Sea-Doo is a critical sealing component engineered for the 1503 engine platform. This head gasket maintains a tight seal between the cylinder head and engine block, preventing coolant and combustion gases from mixing under high compression. It is built for riders and mechanics servicing Sea-Doo RXT STDRS 260 watercraft who need a reliable replacement gasket for top-end engine work.

Built For Performance

• Manufactured to OEM 420950772 specifications for exact fit
• Multi-layer construction resists extreme combustion heat and pressure
• Precision-cut openings match cylinder head and coolant passage geometry
• Designed to seal under the high compression of the 1503 engine
• Compatible with standard Sea-Doo top-end service procedures

Fits These Machines

• for Sea-Doo RXT STDRS 260 (2017)
• for Sea-Doo 1503 engine platform

On-The-Job Use

• Top-end rebuilds after overheating or gasket failure
• Routine engine service on 1503-powered watercraft
• Cylinder head removal and reinstallation projects
• Restoring compression after a blown head gasket

Specs At A Glance

Good To Know

Q: Do I need to replace head bolts when changing this gasket? A: Many manufacturers recommend new torque-to-yield head bolts for a proper seal, so check your service manual before reuse. Always torque in the specified sequence and stages.

Q: How can I tell if my head gasket has failed? A: Common signs include coolant loss with no visible leak, white exhaust smoke, and overheating. A compression or leak-down test can confirm the diagnosis before teardown.

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