420254882 Intake or Exhaust Valve Guide for Sea-Doo Speedster 510 1503 2010-2011

Intake or Exhaust Valve Guide for Sea-Doo 510 1503

This intake or exhaust valve guide for Sea-Doo Speedster 510 1503 models replaces OEM 420254882, keeping valves aligned and moving smoothly inside the cylinder head.

Overview

This valve guide is a precision engine component made for Sea-Doo Speedster 510 1503 watercraft, providing a durable bore that keeps intake and exhaust valves tracking true. It controls valve stem movement to protect against premature wear on the valve and seat. A sound choice for rebuilders and owners refreshing a top end on these machines.

Built For Performance

• Machined bore for consistent valve stem clearance and alignment
• Wear-resistant construction suited to continuous marine engine operation
• Direct replacement for OEM reference 420254882
• Handles heat cycling from repeated run and cool-down cycles
• Sized for the 1503 engine family used in the Speedster 510

Fits These Machines

• for Sea-Doo Speedster 510 (2010-2011)
• for Sea-Doo 1503 engine applications

On-The-Job Use

• Top-end rebuilds and valve jobs
• Cylinder head reconditioning
• Restoring proper valve sealing and compression
• Replacing worn or out-of-spec guides

Specs At A Glance

Good To Know

Q: How many valve guides does one engine need? A: A complete set depends on how many valves the head carries, so check your engine layout and order the quantity required for your rebuild.

Q: Should valve guides be replaced in sets? A: Replacing all guides together during a valve job helps keep clearances even across the head and avoids mixing new and worn parts.

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