420256606 Valve Seat Sleeve for Sea-Doo RXP 1503 2005-2006

Valve Seat Sleeve for Sea-Doo RXP 1503

This valve seat sleeve is a replacement engine component for the Sea-Doo RXP 1503, serving as the insert that presses into the cylinder head to provide a durable sealing surface for the valve. It matches OEM part number 420256606.

Overview

This valve seat sleeve for Sea-Doo is a precision-machined insert that presses into the cylinder head to give the valve a hardened, heat-resistant seating surface. The valve seat sleeve for Sea-Doo RXP 1503 helps restore proper valve sealing on 1503 engine rebuilds. It suits owners and mechanics refreshing a high-hour engine.

Built For Performance

• Machined to OEM 420256606 dimensions for correct press fit
• Heat-resistant alloy suited to combustion chamber temperatures
• Provides a durable sealing surface for the valve face
• Restores compression lost to worn or pitted seats
• Sold as a single replacement sleeve

Fits These Machines

• for Sea-Doo RXP 1503 (2005-2006)

On-The-Job Use

• Cylinder head rebuilds on 1503 four-stroke engines
• Valve job and seat replacement during top-end service
• Restoring sealing on high-hour personal watercraft
• Shop-level engine repair and refresh work

Specs At A Glance

Good To Know

Q: Does this fit other Sea-Doo 1503 engines? A: It is listed for the RXP 1503 for the 2005-2006 model years, so verify your engine code and serial number before ordering. Q: Is installation a direct press-in? A: Valve seat sleeves are installed with a press and typically require cylinder head machining, so professional installation is recommended.

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