420950772 Head Gasket for Sea-Doo RXT SCIC 1503 2007

Head Gasket for Sea-Doo RXT SCIC 1503

This head gasket, part number 420950772, seals the cylinder head to the engine block on Sea-Doo RXT SCIC 1503 watercraft, maintaining compression and separating coolant from combustion gases.

Overview

This head gasket is a sealing component built for the Sea-Doo RXT SCIC 1503 engine, closing the gap between the cylinder head and block under high heat and pressure. It keeps combustion gases, coolant, and oil in their proper passages so the engine holds compression and stays cool. It suits riders servicing a 2007 RXT SCIC during a top-end repair or rebuild.

Built For Performance

• Precision-cut to match the 1503 engine head bolt pattern
• Multi-layer construction handles repeated heat and compression cycles
• Seals combustion, coolant, and oil passages in a single gasket
• Engineered for the demands of a supercharged engine platform
• Direct replacement for OEM part number 420950772

Fits These Machines

• for Sea-Doo RXT SCIC 1503, 2007

On-The-Job Use

• Top-end rebuilds after gasket blowout or overheating
• Cylinder head removal and reinstallation service
• Compression restoration on supercharged 1503 engines
• Routine maintenance on older high-hour watercraft

Specs At A Glance

Good To Know

Q: Should I replace the head bolts when installing this gasket? A: Many service manuals call for new torque-to-yield head bolts, so verify the requirement for your engine before assembly. Stretched bolts can cause uneven clamping and lead to a repeat gasket failure.

Q: Is head resurfacing needed before I install this gasket? A: Both mating surfaces should be clean, flat, and free of old gasket material for a proper seal. On a supercharged engine that overheated, have the head checked for warpage first.

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