420256606 Valve Seat Sleeve for Sea-Doo Speedster 1 x 155 1503 2012

Valve Seat Sleeve for Sea-Doo

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

Overview

The valve seat sleeve for Sea-Doo is a precision engine component that presses into the cylinder head to provide a durable sealing surface for the valves. This valve seat sleeve for Sea-Doo helps maintain proper compression and valve function in 1503 engines. It is intended for riders and mechanics rebuilding or servicing a Sea-Doo Speedster 155 watercraft.

Built For Performance

• OEM cross-reference 420256606 for direct fitment matching
• Machined seating surface for consistent valve seal
• Constructed to withstand high combustion temperatures
• Designed for the 1503 engine platform
• Restores valve seat geometry during head service

Fits These Machines

• for Sea-Doo Speedster 155
• for Sea-Doo watercraft equipped with the 1503 engine

On-The-Job Use

• Cylinder head rebuilds and valve jobs
• Top-end engine service on 1503 powerplants
• Restoring compression in worn valve seats
• Marine engine repair shops and DIY rebuilds

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is a replacement valve seat sleeve that cross-references OEM number 420256606. It is not an original brand product.

Q: How many sleeves come with this listing? A: This listing is for one valve seat sleeve. Confirm the quantity needed for your cylinder head 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.