420254882 Intake or Exhaust Valve Guide for Sea-Doo GTX S/C 1503 2003-2006

Intake or Exhaust Valve Guide for Sea-Doo

This valve guide is a replacement engine component for Sea-Doo personal watercraft that keeps intake and exhaust valves aligned as they open and close. It serves as a direct replacement for OEM part number 420254882 and suits riders maintaining or rebuilding a 1503 engine.

Overview

This intake or exhaust valve guide for Sea-Doo is a precision-machined sleeve that mounts in the cylinder head and holds each valve on its correct axis. The valve guide for Sea-Doo 1503 engines reduces side-to-side movement, helping valves seat properly and combustion stay consistent. It fits riders replacing worn guides during a top-end rebuild or routine engine service.

Built For Performance

• Precision-machined bore to hold intake and exhaust valves on-axis
• Direct cross-reference to OEM part number 420254882
• Designed for the 1503 engine platform
• Reduces valve stem play that causes poor sealing and compression loss
• Suitable for both intake and exhaust valve positions
• Constructed for the heat and load cycles of marine engines

Fits These Machines

• for Sea-Doo GTX S/C 1503 (2003-2006)
• for Sea-Doo models running the 1503 engine where OEM 420254882 applies

On-The-Job Use

• Top-end rebuilds that replace worn or out-of-spec valve guides
• Cylinder head service on 1503 engines
• Restoring proper valve seating and compression
• Routine engine maintenance on Sea-Doo personal watercraft

Specs At A Glance

Good To Know

Q: Does this guide work for both intake and exhaust valves? A: Yes, this guide is used in either the intake or exhaust position on the 1503 engine. Always confirm the correct quantity and placement against your service manual.

Q: Do I need to machine the head after installing new valve guides? A: New guides are typically installed with a press and then reamed or honed to final clearance. Valve seat work may also be required, so have a qualified machinist handle installation.

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