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

Intake or Exhaust Valve Guide for Sea-Doo

This intake or exhaust valve guide, part number 420254882, is a direct-fit engine component that keeps valve stems aligned inside the cylinder head of your Sea-Doo watercraft.

Overview

This valve guide for Sea-Doo is a machined sleeve pressed into the cylinder head to keep each intake or exhaust valve moving in a straight line. By controlling valve stem side play, this intake or exhaust valve guide helps maintain a proper seal at the valve seat and consistent compression. It suits riders and mechanics rebuilding or servicing the 1503 engine used in the RXT IS 255.

Built For Performance

• Precision-bored inner diameter for correct valve stem clearance
• Machined from durable bearing-grade material
• Handles the heat and load of a marine four-stroke cylinder head
• Direct replacement for OEM part number 420254882
• Sold as a single guide for intake or exhaust positions

Fits These Machines

• for Sea-Doo RXT IS 255 with the 1503 engine (2009)

On-The-Job Use

• Cylinder head rebuilds and top-end refreshes
• Valve seal and valve replacement jobs
• Restoring compression on a high-hour 1503 engine
• Shop and DIY engine service on personal watercraft

Specs At A Glance

Good To Know

Q: Does this guide fit both intake and exhaust valves? A: Yes, this guide is used in either position on the 1503 cylinder head. Confirm the part number 420254882 matches your engine before ordering.

Q: How many guides should I order for a full cylinder head? A: Count the valves in your head and order one guide per valve stem position. Many rebuilders replace all guides at once for even wear.

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