420254882 Intake or Exhaust Valve Guide for Sea-Doo RXT X 255 1503 2008-2009

Intake or Exhaust Valve Guide for Sea-Doo

This intake or exhaust valve guide, OEM cross-reference 420254882, keeps valves moving true inside the cylinder head of your Sea-Doo 1503 engine.

Overview

This valve guide is a replacement cylinder head component for the Sea-Doo 1503 engine platform. It holds the intake or exhaust valve in precise alignment so the valve seats evenly and compression stays where it should. A direct fit for riders and shops rebuilding 2008 to 2009 RXT X 255 machines.

Built For Performance

• Precision-machined bore for consistent valve stem clearance
• OEM cross-reference 420254882 for exact-fit replacement
• Works on both intake and exhaust valve positions
• Heat-resistant material suited to sustained marine engine temperatures
• Restores proper valve alignment after top-end wear

Fits These Machines

• for Sea-Doo RXT X 255, 2008
• for Sea-Doo RXT X 255, 2009

On-The-Job Use

• Top-end rebuilds on the 1503 engine
• Valve seal and guide replacement during head service
• Restoring compression on high-hour personal watercraft

Specs At A Glance

Good To Know

Q: Should valve guides be replaced in a full set? A: Most builders replace all guides during a top-end service so wear stays even across the head. Check each guide bore for play before deciding.

Q: Does this need machining after installation? A: Guide installation often requires the seat to be cut or lapped so the valve seals correctly. Have a machine shop verify clearances 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.