420254882 Intake Exhaust Valve Guide for Sea-Doo GTI P SE 155 1503 2018

Intake or Exhaust Valve Guide for Sea-Doo GTI P SE 155 1503

This intake or exhaust valve guide, OEM cross-reference 420254882, guides the valve stem to keep it moving in line inside the cylinder head of your 1503 engine.

Overview

This valve guide is built for the Sea-Doo GTI P SE 155 1503 platform and keeps valve stems tracking straight through every combustion cycle. It is the replacement part for riders doing top-end work who want the head to breathe the way it did from the factory.

Built For Performance

• Precision machined bore to hold valve stem clearance within spec
• Stable guide-to-valve alignment that reduces stem wobble at high rpm
• Works on both intake and exhaust positions
• Manufactured to OEM cross-reference 420254882 dimensions
• Suitable for cylinder head rebuilds and valve seal replacement jobs

Fits These Machines

• for Sea-Doo GTI P SE 155 1503, 2018

On-The-Job Use

• Valve seal and guide replacement during a top-end refresh
• Cylinder head rebuild after a valve or piston failure
• Routine maintenance on high-hour 1503 engines
• Machine shop head work on Sea-Doo personal watercraft

Specs At A Glance

Good To Know

Q: Do I need to replace all valve guides at once? A: Most rebuilders replace the full set when the head is apart so guide wear stays even across all valves. Replacing them individually is possible but requires the same machine work either way.

Q: Does this guide need machining after installation? A: Valve guides are typically installed with a driver and then reamed or honed to final stem clearance. Have your machine shop check the fit before assembly.

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