420898044 Timing Cam Chain for Sea-Doo Sportster 155 1503 2003-2006

Timing/Cam Chain for Sea-Doo Sportster 155 1503

This timing/cam chain replaces OEM part 420898044 and keeps camshaft timing accurate on the Rotax 1503 engine used in the Sea-Doo Sportster 155.

Overview

This timing/cam chain for Sea-Doo is a direct-fit replacement camshaft drive chain made to restore correct valve timing on the 1503 four-stroke engine. It cross-references OEM 420898044, so it drops into the same position as the factory chain on 2003-2006 Sportster 155 models. Riders and shops pick up this timing/cam chain when a stretched or noisy original chain needs replacing during a top-end or timing service.

Built For Performance

• Pre-stretched construction to resist elongation under sustained RPM
• Roller-link design for smooth engagement with the cam sprockets
• Heat-treated pins and plates for wear resistance in a marine four-stroke
• Built to OEM 420898044 dimensions for a drop-in fit
• Sealed packaging to protect against corrosion before installation
• Suited to the 1503 engine platform

Fits These Machines

• for Sea-Doo Sportster 155, 2003-2006
• for Sea-Doo 1503 engine applications

On-The-Job Use

• Timing chain replacement during scheduled top-end service
• Repair after a stretched or jumped chain causes rough running
• Rebuilds where the cam drive is refreshed with the valvetrain
• Shop work on Rotax 1503 four-stroke marine engines

Specs At A Glance

Good To Know

Q: Does this chain require any modification to install? A: No, it is built to the OEM 420898044 dimensions and installs in the factory cam drive position without modification. Follow the service manual procedure for timing alignment.

Q: Should related timing components be replaced at the same time? A: It is common practice to inspect the tensioner and guides while the chain is out and replace any worn parts. Replacing them together helps avoid a repeat teardown later.

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