420874846 Fuel Injector for Sea-Doo Challenger SP 310 1503 2011

Fuel Injector for Sea-Doo

This fuel injector for Sea-Doo is a direct replacement part that delivers precise fuel metering to keep your 1503 engine running clean, and it cross-references OEM part number 420874846.

Overview

This fuel injector for Sea-Doo is built to restore proper fuel delivery on the 1503 engine platform. As a replacement fuel injector, it meters fuel into the combustion chamber for consistent atomization and reliable starts. It suits riders and mechanics servicing a 2011 Challenger SP 310 who want a dependable fuel injector for Sea-Doo without hunting down a dealer-only component.

Built For Performance

• Direct replacement for OEM part number 420874846
• Designed for the 1503 four-stroke engine platform
• Precise fuel metering for consistent combustion
• Supports smooth idle and clean throttle response
• Sealed connector body resists moisture and corrosion

Fits These Machines

• for Sea-Doo Challenger SP 310, 2011
• for Sea-Doo models running the 1503 engine

On-The-Job Use

• Replacing a clogged or failed injector on a 1503 engine
• Fuel system service and injector cleaning jobs
• Restoring rough-running or hard-starting jet boats
• Routine maintenance on 2011 Challenger SP 310 models

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is an aftermarket replacement fuel injector for Sea-Doo applications that cross-references OEM number 420874846, not a factory-branded component.

Q: Should I replace all injectors at once? A: Many technicians replace the full set when one fails so fuel delivery stays balanced across all cylinders of the 1503 engine.

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