420256606 Valve Seat Sleeve for Sea-Doo GTX STD NA 1503 2007 2019

Valve Seat Sleeve for Sea-Doo

This valve seat sleeve is a replacement engine component that restores proper valve sealing in the cylinder head, referenced under part number 420256606.

Overview

This valve seat sleeve is a precision-fit component for the 1503 engine platform found in Sea-Doo personal watercraft. It presses into the cylinder head to give the valve a durable, correctly sized seating surface. This valve seat sleeve for Sea-Doo is aimed at rebuilders and owners refreshing a top end.

Built For Performance

• Precision machined for a consistent press-fit in the cylinder head
• Hardened seating surface that resists valve face wear
• Restores correct valve sealing for dependable compression
• Direct replacement for part number 420256606
• Suited to top-end rebuild and refresh work

Fits These Machines

• for Sea-Doo GTX STD NA 1503, 2007
• for Sea-Doo GTX STD NA 1503, 2019
• for Sea-Doo GTX STD HO 1503, 2019

On-The-Job Use

• Cylinder head service during a top-end rebuild
• Replacing worn or recessed valve seats in the 1503 engine
• Workshop repairs on Sea-Doo GTX watercraft
• Restoring valve seal after a valve job

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is an aftermarket valve seat sleeve for Sea-Doo applications, referenced by part number 420256606. It is not an original brand component.

Q: Does the sleeve need machining after installation? A: Valve seat sleeves are normally installed with a press and then cut or lapped so the valve seats correctly. Have the head checked by a qualified machinist before final assembly.

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