420874432 Fuel Injector for Sea-Doo Speedster 255 1503 2009-2011

Fuel Injector for Sea-Doo

This fuel injector, OE cross-reference 420874432, delivers the precise fuel charge the 1503 engine in the Sea-Doo Speedster 255 needs for clean combustion and steady power.

Overview

This fuel injector is a direct-fit replacement for the Sea-Doo Speedster 255 powered by the 1503 engine. It meters fuel into the intake charge so the engine runs at the right air-fuel ratio under load. A smart pick for owners restoring a 2009 to 2011 Speedster 255 or servicing a rough-running injector.

Built For Performance

• Direct replacement for OE part number 420874432
• Built to deliver consistent fuel spray and atomization
• Sealed electrical connector resists moisture in marine use
• Corrosion-resistant body suited to freshwater and saltwater boating
• Factory-style fitment into the 1503 engine fuel rail
• Sold as a single injector for straightforward replacement

Fits These Machines

• for Sea-Doo Speedster 255 with 1503 engine, 2009-2011

On-The-Job Use

• Restoring a rough-idling or misfiring 1503 engine
• Routine fuel system service after storage
• Replacing a clogged or leaking injector
• Keeping a jet boat running clean on the water

Specs At A Glance

Good To Know

Q: How many injectors does my 1503 engine need? A: The 1503 engine uses multiple injectors, so check how many your model requires and order the matching quantity. This listing is for one injector.

Q: Should I replace all injectors at once? A: If one injector fails, many owners replace the full set to keep fuel delivery even across cylinders. Replacing them together can save repeat labor on the same engine.

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