420254882 Intake or Exhaust Valve Guide for Sea-Doo RXP 155 1503 2008

Intake or Exhaust Valve Guide for Sea-Doo RXP 155 1503

This intake or exhaust valve guide for Sea-Doo RXP 155 1503 keeps each valve moving on a straight, controlled path inside the cylinder head, cross-referenced to OEM part number 420254882.

Overview

The valve guide for Sea-Doo RXP 155 1503 is a precision-machined sleeve pressed into the cylinder head to hold each intake or exhaust valve in correct alignment. It controls valve stem movement so the valve seats squarely on every stroke, protecting compression and combustion. This valve guide suits riders and rebuilders servicing the 1503 engine platform who want a dependable replacement for a worn or out-of-spec guide.

Built For Performance

• Machined to original equipment dimensions for correct stem-to-guide clearance
• Direct replacement for OEM part number 420254882
• Works on both intake and exhaust valve positions
• Heat-resistant material suited to continuous cylinder head temperatures
• Precision bore supports proper valve sealing and oil control
• Sold as a single guide for targeted replacement

Fits These Machines

• for Sea-Doo RXP 155 1503 (2008)
• for Sea-Doo 1503 engine platform applications

On-The-Job Use

• Top-end rebuilds after valve seat or stem wear
• Cylinder head refurbishment on 1503 four-stroke engines
• Restoring proper valve alignment after overheating
• Routine engine service where valve play exceeds specification

Specs At A Glance

Good To Know

Q: How do I know if my valve guide needs replacing? A: Excess valve stem play, oil consumption, or compression loss on the 1503 engine often points to a worn guide. Measuring stem-to-guide clearance against the service specification confirms it.

Q: Can I install this guide myself? A: Pressing a valve guide in or out requires a proper driver set, a hydraulic press or guide puller, and cylinder head work knowledge. A machine shop can handle installation and any required reaming.

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