420236501 Timing Chain Tensioner Guide for Sea-Doo LTD 21-300 1630 2026

Timing Chain Tensioner Guide for Sea-Doo

This timing chain tensioner guide is a replacement engine component that keeps the timing chain aligned and tensioned on Sea-Doo 1630-powered watercraft, cross-referencing OEM part number 420236501.

Overview

This timing chain tensioner guide is a replacement part built for Sea-Doo 1630 engines, helping hold the timing chain in correct position and tension. It supports accurate cam timing and reduces chain noise and wear. Suited to riders and technicians servicing Sea-Doo LTD 21-300 and other 1630-equipped models.

Built For Performance

• Direct replacement for OEM part number 420236501
• Maintains proper timing chain alignment
• Helps prevent chain slap and premature wear
• Constructed for marine engine duty cycles
• Simple installation during timing chain service

Fits These Machines

• for Sea-Doo LTD 21-300
• for Sea-Doo 1630-equipped models

On-The-Job Use

• Timing chain replacement and rebuilds
• Personal watercraft engine servicing
• Top-end and cam timing repairs
• Restoring proper chain tension after wear

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: It is an aftermarket replacement tensioner guide that cross-references OEM part number 420236501, not an original brand part.

Q: Do I need to replace the chain at the same time? A: Many mechanics recommend inspecting the timing chain and related guides while the engine is open, since wear often affects multiple components together.

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