420874520 Fuel Injector for Sea-Doo GTX LTD 1503 2006

Fuel Injector for Sea-Doo

This fuel injector replaces OEM part numbers 420874520 to deliver precise fuel delivery to the engine on select Sea-Doo personal watercraft.

Overview

This fuel injector is a direct replacement component for the 1503 engine platform, built to meter fuel into the combustion chamber with accuracy. A properly functioning fuel injector keeps air-fuel ratios in range for smooth acceleration and steady idle on your Sea-Doo. It suits riders replacing a clogged or failed injector on a 2006 GTX LTD.

Built For Performance

• Direct replacement for OEM part number 420874520
• Designed to match factory flow rate for the 1503 engine
• Sealed electrical connector resists moisture intrusion
• Precision-machined nozzle for consistent spray pattern
• Corrosion-resistant body suited to marine environments
• Drop-in fitment with factory fuel rail and harness

Fits These Machines

• for Sea-Doo GTX LTD 1503 (2006)

On-The-Job Use

• Replacing a fouled or leaking injector during routine service
• Restoring smooth idle and throttle response on the water
• Fuel system refresh on high-hour 1503 engines
• Diagnostic replacement when an injector fails a balance test

Specs At A Glance

Good To Know

Q: Is this a genuine Sea-Doo injector? A: This is an aftermarket replacement part designed to match the OEM 420874520 specification, not an original Sea-Doo component. Confirm your engine code and injector part number before ordering.

Q: How many injectors does my 1503 engine use? A: The 1503 three-cylinder platform uses one injector per cylinder, so many owners replace the full set at once. Check your service manual for the exact count on your model.

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