420874520 Fuel Injector for Sea-Doo GTX LTD S/C 1503 2003-2004

Fuel Injector for Sea-Doo

This fuel injector for Sea-Doo, OEM cross-reference 420874520, delivers a precise metered spray of fuel into the intake so the 1503 engine on the GTX LTD S/C runs clean and strong.

Overview

This fuel injector for Sea-Doo is a direct-fit replacement that restores accurate fuel delivery to the 1503 supercharged engine found in the GTX LTD S/C. A tired injector can cause rough idling, hesitation, or a rich-running condition, and this unit is built to put metering back where it belongs. It suits riders and mechanics servicing 2003 to 2004 GTX LTD S/C watercraft who want dependable fuel delivery without guesswork.

Built For Performance

• Direct replacement for OEM part number 420874520
• Precision internal metering for consistent fuel spray
• Sealed body resists fuel and corrosion in marine use
• Stable flow rate supports smooth idle and throttle response
• Installs in the factory injector location without modification
• Built to withstand the heat and vibration of marine engines

Fits These Machines

• for Sea-Doo GTX LTD S/C 1503, 2003
• for Sea-Doo GTX LTD S/C 1503, 2004

On-The-Job Use

• Replacing a clogged or failed injector during engine service
• Restoring smooth idle to a 1503 engine with rough running symptoms
• Routine fuel system maintenance on 2003 to 2004 GTX LTD S/C models
• Shop repairs where matched fuel delivery across the engine matters

Specs At A Glance

Good To Know

Q: Do I need to replace all injectors at once? A: It is not required, but matching flow across the set helps keep fuel delivery even. Many riders replace the failed unit alone and keep the others if they test within spec.

Q: Will this work with my supercharged engine? A: This injector is listed for the GTX LTD S/C 1503 in 2003 to 2004. Confirm your model and serial number before ordering.

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