420950772 Head Gasket for Sea-Doo GTS DT 1503 2014

Head Gasket for Sea-Doo GTS DT 1503

This head gasket replaces OEM 420950772 and seals the cylinder head to the engine block on the 1503 engine used in the Sea-Doo GTS DT.

Overview

This head gasket is a direct replacement sealing component for the 1503 engine fitted to the Sea-Doo GTS DT. It seals the junction between the cylinder head and block to maintain compression and separate coolant and oil channels. Suitable for anyone rebuilding a top end or repairing a leaking head on a 1503, this head gasket delivers a reliable seal.

Built For Performance

• Direct replacement for OEM part number 420950772
• Multi-layer steel construction for a strong combustion seal
• Precision-cut openings for oil and coolant passages
• Made to hold torque and resist heat cycling under load
• Single-unit replacement, no modification required

Fits These Machines

• for Sea-Doo GTS DT 1503

On-The-Job Use

• Top-end rebuilds and head gasket replacement
• Sealing repair after compression or coolant leak issues
• Freshwater and saltwater personal watercraft engines
• Professional and DIY garage repair work

Specs At A Glance

Good To Know

Q: Do I need to replace head bolts when installing this gasket? A: Many torque-to-yield head bolts are single-use, so check your service manual and replace them if specified. Reusing stretched bolts can compromise the seal this head gasket provides.

Q: Should the head and block surfaces be cleaned before install? A: Yes, both mating surfaces must be clean, flat, and free of old gasket material or debris. A proper surface prep helps this gasket seal correctly and prevents premature failure.

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