420254882 Intake or Exhaust Valve Guide for Sea-Doo GTX STD HO 1503 2019

Valve Guide for Sea-Doo GTX STD HO 1503

This intake or exhaust valve guide, reference 420254882, keeps valve stems aligned in the cylinder head of the 1503 HO engine so combustion stays sealed and the valvetrain wears evenly.

Overview

This valve guide is a replacement engine component made to fit the Sea-Doo GTX STD HO 1503 platform. It guides the valve stem through its travel, holding clearances within tolerance so the intake or exhaust valve seats correctly at every cycle.

Built For Performance

• Precision-bored inner diameter for consistent stem-to-guide clearance
• Durable construction built to resist heat and continuous valve cycling
• Fits either intake or exhaust position on the 1503 HO cylinder head
• Direct cross-reference to part number 420254882
• Machined to OEM-style dimensions for drop-in installation

Fits These Machines

• for Sea-Doo GTX STD HO 1503
• for Sea-Doo 2019 models equipped with the 1503 HO engine

On-The-Job Use

• Cylinder head rebuilds and top-end refresh work
• Valve seal and stem wear repair
• Routine engine maintenance on the 1503 HO platform
• Restoring correct valve alignment after overheating or high-hour use

Specs At A Glance

Good To Know

Q: Does this fit both intake and exhaust valves? A: Yes, the guide is used in either position on the 1503 HO cylinder head. Confirm the specific location against your engine before installation.

Q: How many guides should I order? A: Order one guide for each position you are replacing, and inspect all guides during a top-end service to catch uneven wear.

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