420254882 Valve Guide for Sea-Doo Cruise 21-300 1630 2026

Intake or Exhaust Valve Guide for Sea-Doo

This intake or exhaust valve guide, part number 420254882, supports proper valve alignment and movement in the Sea-Doo 1630 engine used by the Cruise 21-300.

Overview

This intake or exhaust valve guide is a replacement component for the Sea-Doo 1630 engine found in the Cruise 21-300. It keeps valve stems aligned as they open and close, which helps maintain consistent compression and combustion. It suits riders and mechanics servicing a Sea-Doo Cruise 21-300 1630 who want a dependable valve guide for a rebuild or top-end repair.

Built For Performance

• Precision-machined bore to guide valve stem travel
• Construction suited to high-temperature cylinder head operation
• Direct replacement for OEM reference 420254882
• Supports correct valve seating and compression
• Install-ready for cylinder head service work

Fits These Machines

• for Sea-Doo Cruise 21-300 1630

On-The-Job Use

• Top-end engine rebuilds and valve jobs
• Cylinder head servicing on the Sea-Doo 1630 engine
• Restoring proper valve alignment after wear
• Routine maintenance for marine engines

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is a replacement valve guide for Sea-Doo applications, not an original brand product, and it cross-references OEM number 420254882.

Q: How many guides do I need for a full set? A: Valve guides are typically replaced per valve, so order the quantity that matches the number of valves being serviced in your cylinder head.

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