420874520 Fuel Injector for Sea-Doo Challenger SP 430 1503 2010

Fuel Injector for Sea-Doo

This fuel injector for Sea-Doo replaces OEM part 420874520, delivering precise fuel delivery to keep your 1503 engine running clean and strong.

Overview

This fuel injector is a direct-fit replacement for the Sea-Doo 1503 engine, built to restore proper fuel atomization and throttle response. It works with the 2010 Challenger SP 430 and other models that specify OEM 420874520. Riders and mechanics choose this injector for Sea-Doo service work when a failed or clogged unit causes rough running, hard starting, or power loss.

Built For Performance

• Direct replacement for OEM part number 420874520
• Precise fuel metering for consistent air-fuel mixture
• Sealed coil and body resist fuel and heat degradation
• Built to original flow rate and spray pattern specs
• Compatible with the 1503 four-stroke engine platform
• Simple drop-in fit for the factory injector port

Fits These Machines

• for Sea-Doo Challenger SP 430 1503 (2010)
• for Sea-Doo models referencing OEM 420874520

On-The-Job Use

• Replacing a clogged or failed injector on the 1503 engine
• Restoring smooth idle and throttle response after fuel system issues
• Routine maintenance on Sea-Doo jet boats and personal watercraft
• Shop repair work where OEM-matched fuel delivery is required

Specs At A Glance

Good To Know

Q: How many injectors does the 1503 engine use? A: The 1503 engine runs one injector per cylinder, so many owners replace the full set at once for even fuel delivery. Confirm the count for your specific model before ordering.

Q: Can I install this injector myself? A: It is a drop-in replacement for the factory port, but fuel system work requires relieving pressure and replacing seals. A service manual for your model is recommended.

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