420254882 Intake or Exhaust Valve Guide for Sea-Doo GTR-X 300 1630 2024-2026

Intake or Exhaust Valve Guide for Sea-Doo

This intake or exhaust valve guide (OEM cross-reference 420254882) keeps valve stems aligned and sliding true in the cylinder head of your watercraft engine.

Overview

This intake or exhaust valve guide is a precision-machined component for the Sea-Doo GTR-X 300 1630 engine platform. It supports proper valve stem travel inside the head, helping maintain compression and combustion stability. Built for riders and shops servicing 2024 to 2026 GTR-X 300 machines.

Built For Performance

• Cross-references OEM part number 420254882
• Guides valve stems to reduce lateral movement
• Suits both intake and exhaust valve positions
• Machined for consistent bore and concentricity
• Built to handle sustained high-RPM marine use

Fits These Machines

• for Sea-Doo GTR-X 300 1630, 2024-2026

On-The-Job Use

• Top-end rebuilds on the 1630 engine
• Cylinder head refreshing during valve service
• Replacing worn guides that cause oil consumption or poor sealing
• Shop and DIY repair work on GTR-X 300 watercraft

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, this is an aftermarket valve guide that cross-references OEM number 420254882. Always verify the part number against your machine before ordering.

Q: Do I need to replace all valve guides at once? A: Many rebuilders replace guides as a full set during a head service to keep wear even across the valvetrain. Follow your service manual for the correct procedure.

Shipping Restriction: Due to emissions regulations, this item cannot be sold or shipped to California, Colorado, Maine, or New York.

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