420254882 Intake or Exhaust Valve Guide for Sea-Doo RXP P X 300 1630 2018

Intake or Exhaust Valve Guide for Sea-Doo

This intake or exhaust valve guide, part number 420254882, is a replacement component that keeps valve stems aligned inside the cylinder head of your watercraft engine.

Overview

This valve guide is a precision-fit replacement for the intake or exhaust valves in select Rotax 1630 engines. It keeps each valve stem moving true so the valve seats and seals correctly throughout the rpm range. It suits riders rebuilding a cylinder head or refreshing top-end components on a Sea-Doo RXP or RXP-X 300.

Built For Performance

• Precision-machined bore for consistent valve stem clearance
• Maintains correct valve alignment for reliable sealing
• Durable construction suited to high-rpm marine engine use
• Imported replacement part cross-referenced to OEM 420254882
• Sold individually for intake or exhaust positions

Fits These Machines

• for Sea-Doo RXP 300 1630 (2018)
• for Sea-Doo RXP-X 300 1630 (2018)
• for Sea-Doo RXP P 300 1630 (2018)
• for Sea-Doo RXP XRS 300 1630 (2018)

On-The-Job Use

• Cylinder head rebuilds on 1630 Rotax engines
• Top-end refreshes when valve stems show wear
• Valve seal replacement jobs on recreational watercraft
• Shop service and maintenance on Sea-Doo 300 models

Specs At A Glance

Good To Know

Q: How many valve guides does one engine need? A: A full cylinder head uses one guide per valve, so order the quantity matching the valves you are servicing. Replacing all guides at once is common during a complete head rebuild.

Q: Does this fit both intake and exhaust positions? A: This guide is listed for intake or exhaust valve positions on the 1630 engine. Verify the guide bore and stem diameter against your head before installation.

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