420874846 Fuel Injector for Sea-Doo Challenger SE 1 x 260 1503 2012

Fuel Injector for Sea-Doo

This fuel injector replaces OEM part number 420874846 and feeds the 1503 engine in the Challenger and SE the precise fuel charge it needs for reliable performance.

Overview

This fuel injector is a direct replacement for the 1503 engine found in Sea-Doo Challenger and SE models. It atomizes fuel into the intake air so the engine maintains the correct air-fuel ratio under load and at cruise. Shops and owners reach for this fuel injector when a worn or clogged original causes hard starting, hesitation, or a rough idle. Keep one on hand so a failed injector never cuts a day on the water short.

Built For Performance

• Direct replacement for OEM part number 420874846
• Precision metering supports a consistent fuel spray pattern
• Sealed electrical connector resists moisture and vibration
• Corrosion-resistant body handles marine engine bay conditions
• Balanced flow supports clean idle and smooth acceleration
• Drop-in fit with no tuning or modification required

Fits These Machines

• for Sea-Doo Challenger with the 1503 engine (2012)
• for Sea-Doo SE with the 1503 engine (2012)

On-The-Job Use

• Bringing rough-running 1503 engines back to smooth operation
• Routine fuel system service on jet boats and personal watercraft
• Troubleshooting misfire or lean-condition codes
• Keeping a spare injector ready for busy boating seasons

Specs At A Glance

Good To Know

Q: How many injectors does this engine use? A: The 1503 engine runs one injector per cylinder, so inspect the whole set and replace any that test out of spec. Order the quantity your service calls for.

Q: Do I need to replace the seals when installing this injector? A: Replacing the O-rings or seals during installation is good practice, since old seals can leak or let air into the fuel charge. Confirm the correct seal part for your machine before starting.

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