420256606 Valve Seat Sleeve for Sea-Doo Challenger Wake 310 1503 2008

Valve Seat Sleeve for Sea-Doo

This valve seat sleeve, reference 420256606, is a replacement engine component that restores a proper sealing surface for the valve in Sea-Doo 1503 powerplants.

Overview

This valve seat sleeve for Sea-Doo is a precision-machined insert that presses into the cylinder head to give the valve a durable, correctly sized seat. The sleeve, part number 420256606, renews the sealing surface so the valve can close consistently and hold compression. It is intended for riders and shops rebuilding or servicing a Sea-Doo 1503 engine.

Built For Performance

• Machined to restore the valve seating surface in the cylinder head
• Reference 420256606 matches the original fitment specification
• Designed for the Sea-Doo 1503 four-stroke engine platform
• Supports proper valve sealing and consistent compression
• Suited to rebuild and top-end service work

Fits These Machines

• for Sea-Doo Challenger Wake 310 with the 1503 engine, 2008

On-The-Job Use

• Cylinder head rebuilds on Sea-Doo 1503 engines
• Valve service and top-end refresh work
• Restoring compression on a high-hour engine
• Shop and DIY engine repair projects

Specs At A Glance

Good To Know

Q: Does this fit my Sea-Doo 1503 engine? A: It is listed for the Challenger Wake 310 with the 1503 engine from 2008, and fit can vary by serial number, so confirm before ordering. Q: How many sleeves come with this listing? A: This listing covers the valve seat sleeve as described by part number 420256606.

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