420256606 Valve Seat Sleeve for Sea-Doo GTX LTD 1503 2006

Valve Seat Sleeve for Sea-Doo

This valve seat sleeve is a replacement engine component for Sea-Doo personal watercraft, designed to restore proper valve seating in the cylinder head. It cross-references OEM part number 420256606 for a precise fit.

Overview

This valve seat sleeve for Sea-Doo is a machined engine component that presses into the cylinder head to provide a durable seating surface for the valve. The valve seat sleeve for Sea-Doo helps maintain proper compression and valve sealing in 1503 engines. It is intended for riders and mechanics rebuilding or servicing Sea-Doo GTX LTD watercraft.

Built For Performance

• Machined to OEM dimensions for accurate valve seating
• Cross-references OEM part number 420256606
• Designed for the 1503 engine platform
• Restores valve seal and compression
• Direct-fit replacement for worn or damaged seats

Fits These Machines

• for Sea-Doo GTX LTD 1503 (2006)

On-The-Job Use

• Cylinder head rebuilds and valve jobs
• Top-end engine service on 1503 powerplants
• Restoring compression on high-hour watercraft

Specs At A Glance

Good To Know

Q: Does this valve seat sleeve require machining after installation? A: Valve seat sleeves are typically pressed in and then cut or lapped to match the valve angle for a proper seal. Have a qualified machinist verify seat concentricity after installation.

Q: Can I replace just one valve seat sleeve? A: Replacing a single worn sleeve is possible, but inspecting all seats in the head at the same time is recommended. Worn seats often appear in sets due to shared operating conditions.

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