420254882 Intake or Exhaust Valve Guide for Sea-Doo LTD 18-300 1630 2026

Intake or Exhaust Valve Guide for Sea-Doo

This intake or exhaust valve guide for Sea-Doo is a replacement engine component that keeps valve stems aligned inside the cylinder head; it carries OEM cross-reference 420254882.

Overview

This valve guide for Sea-Doo fits into the cylinder head to hold intake and exhaust valve stems on center as they open and close. It restores valve stem support on high-hour engines and is intended for riders and mechanics rebuilding a Sea-Doo 1630 engine. Confirm your engine code and head casting before ordering this intake or exhaust valve guide.

Built For Performance

• Guide bore sized for correct valve stem clearance
• Machined for a firm press fit into the cylinder head
• Works for both intake and exhaust valve positions
• Heat-resistant material suited to continuous engine temperatures
• Replacement for OEM reference 420254882

Fits These Machines

• for Sea-Doo LTD 18-300 with 1630 engine, 2026

On-The-Job Use

• Cylinder head rebuilds on 1630 engines
• Valve stem wear correction on high-hour watercraft
• Top-end service after valve seat work
• Shop and DIY engine repair

Specs At A Glance

Good To Know

Q: How many valve guides does one engine need? A: A guide is sold as a single unit, so order the quantity that matches the number of positions you are rebuilding.

Q: Does this guide need machining after installation? A: Valve guides are commonly reamed or honed to final stem clearance after being pressed into the head, so check your service specification.

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