420254882 Intake Exhaust Valve Guide for Sea-Doo Speedster 255 1503 2009-2011

Intake or Exhaust Valve Guide for Sea-Doo

This valve guide for Sea-Doo is a replacement cylinder head component that steers the intake or exhaust valve stem in a 1503 engine, and it references OEM part number 420254882.

Overview

This valve guide for Sea-Doo presses into the cylinder head and keeps the valve stem moving on a straight path as the valve opens and closes. Worn guides cause oil consumption, poor sealing, and valve seat damage, so replacing them is standard during a head rebuild. It is built for the Sea-Doo Speedster 255 running the 1503 engine.

Built For Performance

• Guides the intake or exhaust valve stem for consistent valve motion
• Restores correct stem-to-guide clearance on a rebuilt head
• Sized for the Sea-Doo 1503 four-stroke engine platform
• Works for both intake and exhaust valve positions
• Cross-references OEM part number 420254882

Fits These Machines

• for Sea-Doo Speedster 255, 2009
• for Sea-Doo Speedster 255, 2010
• for Sea-Doo Speedster 255, 2011

On-The-Job Use

• Cylinder head rebuilds on the 1503 four-stroke engine
• Valve seal and seat service during a top-end refresh
• Correcting oil consumption or compression issues traced to worn guides
• Jet boat engine maintenance on the Sea-Doo Speedster 255

Specs At A Glance

Good To Know

Q: Does this valve guide fit both intake and exhaust valves? A: Yes, this guide serves the intake or exhaust side of the cylinder head. Q: Does installing a guide require machining? A: Guides are typically pressed in and reamed to final clearance, and honing the valve seat afterward is common practice.

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