420874520 Fuel Injector for Sea-Doo Speedster 430 1503 2008

Fuel Injector for Sea-Doo Speedster 430 1503

This fuel injector replaces OEM part 420874520 and delivers measured fuel delivery on Sea-Doo Speedster 430 1503 models, keeping the engine running clean at speed.

Overview

This fuel injector for Sea-Doo is a direct-fit replacement unit built to restore proper atomization and fuel delivery on a 1503 engine. It suits owners chasing rough idle, misfires, or lean-running symptoms traced to a tired injector. One fuel injector for Sea-Doo installs in the factory location using the original connector and O-ring seal.

Built For Performance

• Cross-references OEM part 420874520 for a confident match
• Sealed electrical connector resists moisture in the engine bay
• Stainless internals resist corrosion from fuel and humidity
• Calibrated flow rate supports consistent air-fuel ratios
• Compact body drops into the factory injector bore

Fits These Machines

• for Sea-Doo Speedster 430 with the 1503 engine
• for Sea-Doo 1503 engine applications using injector 420874520

On-The-Job Use

• Replacing a clogged or failed injector on the 1503 powerplant
• Restoring smooth idle and throttle response on the water
• Routine fuel system service before a season of riding
• Diagnosing misfire or rich-running faults tied to fuel delivery

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, this is an aftermarket fuel injector built to match OEM part 420874520. It is not manufactured or endorsed by Sea-Doo.

Q: How many injectors does my 1503 engine use? A: The 1503 is a multi-cylinder engine with one injector per cylinder, so confirm your build before ordering quantities. Replacing all of them at once is common practice during fuel system service.

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