420874430 Fuel Injector for Sea-Doo Challenger SE 155 1503 2007-2009

Fuel Injector for Sea-Doo

This fuel injector for Sea-Doo delivers a precise, metered spray of fuel into the combustion chamber, replacing OEM cross-reference 420874430 for reliable engine performance.

Overview

This fuel injector for Sea-Doo is a direct-fit replacement engineered to meter fuel delivery into your marine engine for crisp throttle response and steady idle quality. Each injector for Sea-Doo is built to match the spray pattern and flow characteristics expected by the 1503 engine platform. It suits riders who want to restore factory-like fuel delivery without hunting down discontinued OEM parts.

Built For Performance

• Precision-metered fuel spray for consistent combustion and smoother idle
• Direct-fit replacement for OEM cross-reference 420874430
• Sealed electrical connector resists moisture and corrosion in marine environments
• Calibrated internal coil for reliable solenoid response under load
• Compatible with the 1503 four-stroke engine platform

Fits These Machines

• for Sea-Doo Challenger 155 2007-2009
• for Sea-Doo Challenger SE 155 2007-2009

On-The-Job Use

• Replacing clogged or failed injectors during marine engine service
• Restoring atomization after long storage or ethanol fuel exposure
• Routine fuel system maintenance on 1503-powered sport boats
• Diagnosing misfire or rough idle caused by weak injector spray

Specs At A Glance

Good To Know

Q: How do I know if my injector needs replacing? A: Rough idle, misfires, hesitation under throttle, and fouled plugs often point to a failing injector. Fuel pressure testing and spray pattern inspection confirm the diagnosis.

Q: Are injectors sold individually or as a set? A: This listing is for one fuel injector. Check your engine's cylinder count and order the exact quantity you need for a full replacement set.

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