420950772 Head Gasket for Sea-Doo GTS 1503 2015

Head Gasket for Sea-Doo GTS 1503

This head gasket for Sea-Doo seals the cylinder head to the engine block on 2015 GTS models equipped with the 1503 engine, replacing OEM part 420950772.

Overview

This head gasket for Sea-Doo is a direct-fit sealing component for the 1503 engine found in 2015 GTS watercraft. It seals the cylinder head to the block, maintaining compression and separating coolant and oil passages. Suited to riders and shops doing top-end repair or rebuild work.

Built For Performance

• Precision-cut to match the 1503 cylinder head and block mating surfaces
• Cross-references OEM part number 420950772
• Multi-layer construction designed to handle high compression and heat cycles
• Withstands the thermal stress of marine engine operation
• Seals combustion, coolant, and oil passages in one gasket

Fits These Machines

• for Sea-Doo GTS 1503 (2015)

On-The-Job Use

• Top-end rebuilds after a blown or weeping head gasket
• Cylinder head removal and reinstallation jobs
• Compression loss diagnosis and repair
• Routine engine refresh on high-hour 1503 powerplants

Specs At A Glance

Good To Know

Q: Do I need to replace head bolts when installing this gasket? A: Many marine engine manufacturers recommend new torque-to-yield head bolts or at least checking stretch on originals. Follow the service manual torque sequence for the 1503 engine.

Q: Will this fit other Sea-Doo models with the 1503 engine? A: It is listed for the GTS 1503 application above. Confirm your model, year, and engine code against the OEM number 420950772 before ordering.

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