420256606 Valve Seat Sleeve for Sea-Doo GTX 155 1503 2008-2016

Valve Seat Sleeve for Sea-Doo GTX 155 1503

This valve seat sleeve for Sea-Doo is a replacement engine component that restores a proper sealing surface for the valve in 1503-series Rotax powerplants, referenced under OEM part number 420256606.

Overview

This valve seat sleeve for Sea-Doo is a precision engine part that presses into the cylinder head to give the valve a durable, correctly sized seat. The valve seat sleeve for Sea-Doo keeps valve sealing tight so compression and combustion stay where they belong. It suits riders and mechanics rebuilding or refreshing a 1503 engine who want a direct-fit replacement for OEM 420256606.

Built For Performance

• Direct replacement for OEM part number 420256606
• Precision-formed to restore proper valve seating in the 1503 cylinder head
• Designed for the Sea-Doo GTX 155 1503 platform
• Supports correct valve seal and consistent compression
• Suited to rebuild and top-end refresh work

Fits These Machines

• for Sea-Doo GTX 155 1503, 2008-2013
• for Sea-Doo GTX 155 1503, 2015-2016

On-The-Job Use

• Cylinder head rebuilds on 1503 engines
• Top-end refresh after valve wear or damage
• Shop service and seasonal maintenance
• Restoring a personal watercraft to running condition

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is an aftermarket valve seat sleeve that cross-references OEM number 420256606, not an original brand product. Confirm your engine and part number before ordering.

Q: How many sleeves do I need? A: Order the quantity that matches the valves you are servicing, since each sleeve serves one valve position. Check your cylinder head layout before placing your order.

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