420874430 Fuel Injector for Sea-Doo Challenger Wake 155 1503 2007

Fuel Injector for Sea-Doo

This fuel injector for Sea-Doo delivers a precise metered spray of fuel into the combustion chamber, and it carries the OEM cross-reference 420874430.

Overview

This fuel injector for Sea-Doo is built to restore accurate fuel delivery on 1503-powered watercraft. The fuel injector for Sea-Doo meters atomized fuel into the intake tract so the engine runs cleanly through the full throttle range. It suits riders and mechanics replacing a clogged or failed injector on a Challenger Wake 155.

Built For Performance

• Direct-fit geometry matching the 420874430 injector footprint
• Electromagnetic solenoid coil built for consistent open and close timing
• Precision-machined nozzle for an even atomized spray pattern
• Sealing surfaces finished to resist fuel weepage at the rail and head
• Housing material chosen to stand up to constant fuel and heat exposure

Fits These Machines

• for Sea-Doo Challenger Wake 155 1503, 2007

On-The-Job Use

• Restoring rough-running or misfiring 1503 engines on the water
• Routine injector replacement during top-end or fuel system service
• Rebuilding fuel delivery on a Challenger Wake 155 that has sat unused

Specs At A Glance

Good To Know

Q: Should injectors be replaced one at a time? A: One failed injector can usually be swapped on its own, though many mechanics service the full set together when mileage is high. Matching flow across all cylinders keeps the engine balanced.

Q: Does this need new seals and o-rings? A: Fresh seals are recommended whenever a fuel injector is pulled, since old rings harden and leak. Inspect the rail connections during install.

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