420874430 Fuel Injector for Sea-Doo Challenger SE 310 1503 2008-2010

Fuel Injector for Sea-Doo Challenger / SE 310 1503

This fuel injector delivers a metered spray of fuel into the engine of Sea-Doo Challenger and SE 310 1503 watercraft, cross-referencing OEM part number 420874430.

Overview

This fuel injector is a direct-fit replacement for the 1503 engine used in Sea-Doo Challenger and SE 310 1503 models from 2008 to 2010. It restores precise fuel delivery so the engine runs cleanly and responds the way it should on the water. Anyone servicing a 420874430 injector on a 1503-powered Sea-Doo can use this part to get the craft running right again.

Built For Performance

• Cross-references OEM part number 420874430
• Designed for the 1503 four-stroke engine platform
• Delivers consistent fuel atomization for smooth combustion
• Sealed electrical connector to resist moisture intrusion
• Built to withstand the heat and vibration of marine use

Fits These Machines

• for Sea-Doo Challenger 310
• for Sea-Doo Challenger SE 310
• for Sea-Doo 1503 engine applications 2008-2010

On-The-Job Use

• Replacing a clogged or failed injector on a 1503 engine
• Restoring rough-running or hard-starting conditions
• Routine fuel system service on Challenger and SE 310 models
• Getting a watercraft back on the water after injector failure

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is a replacement fuel injector for Sea-Doo applications, cross-referenced to OEM number 420874430. Confirm your engine and part number match before ordering.

Q: How many injectors should I replace at once? A: Many owners replace all injectors together so fuel delivery stays even across cylinders. Check your service manual for the recommended procedure.

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