420236501 Timing Chain Tensioner Guide for Sea-Doo RXT X 255 1503 2008-2009

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 1503 4-TEC engines, cross-referencing OEM part 420236501.

Overview

This timing chain tensioner guide fits Sea-Doo 1503-powered watercraft and works to hold the timing chain in proper alignment as it travels through the engine. A worn or broken guide can cause chain slap, timing drift, or serious top-end damage, so replacing it during a rebuild or service interval protects the whole valvetrain. It is aimed at riders and mechanics servicing 2008 to 2009 Sea-Doo RXT X 255 machines.

Built For Performance

• Direct cross-reference to OEM part 420236501 for straightforward replacement
• Designed to keep the timing chain centered and tensioned under load
• Durable construction suited to the heat and stress of marine 4-TEC engines
• Helps prevent chain slap, rattle, and premature timing chain wear
• Installs in the factory guide location without modification

Fits These Machines

• for Sea-Doo RXT X 255 1503, 2008 to 2009
• for Sea-Doo models equipped with the 1503 4-TEC engine

On-The-Job Use

• Timing chain service and engine rebuilds on 1503 4-TEC powerplants
• Top-end repair after timing chain noise or failure
• Preventive maintenance during scheduled engine teardown
• Marine shops servicing Sea-Doo personal watercraft

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is an aftermarket replacement cross-referencing OEM 420236501, phrased as a guide for Sea-Doo machines. Confirm your engine code before ordering.

Q: Should I replace the tensioner at the same time? A: If the guide shows wear, the tensioner and chain are often replaced together to avoid repeat teardown. Inspect all timing components during service.

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