420874430 Fuel Injector for Sea-Doo Speedster 155 1503 2007-2011

Fuel Injector for Sea-Doo

This fuel injector delivers precise fuel metering to the 1503 engine, restoring smooth acceleration and reliable power delivery. It serves as a direct replacement for OEM reference 420874430.

Overview

This fuel injector is a replacement component built for the Sea-Doo Speedster 155 1503, providing accurate fuel spray for consistent combustion. It helps resolve rough running, misfires, and hard starting caused by a clogged or failed injector. This fuel injector suits owners maintaining 2007 through 2011 Speedster 155 models.

Built For Performance

• Direct fitment for the 1503 engine platform
• Precision nozzle design for consistent fuel atomization
• Sealed electrical connector resists moisture intrusion
• Corrosion-resistant body for marine environments
• Matches OEM flow characteristics for balanced fuel delivery

Fits These Machines

• for Sea-Doo Speedster 155 1503 (2007)
• for Sea-Doo Speedster 155 1503 (2008)
• for Sea-Doo Speedster 155 1503 (2009)
• for Sea-Doo Speedster 155 1503 (2010)
• for Sea-Doo Speedster 155 1503 (2011)

On-The-Job Use

• Replacing a clogged or failed injector during engine service
• Restoring smooth idle and throttle response on the water
• Diagnosing misfire and rough-running complaints
• Routine fuel system maintenance

Specs At A Glance

Good To Know

Q: How do I know if my injector needs replacing? A: Common signs include rough idle, misfires, hard starting, and poor fuel economy. A diagnostic scan or flow test can confirm whether the injector is the source.

Q: Should injectors be replaced in sets? A: Replacing all injectors at once helps maintain balanced fuel delivery across cylinders. If only one has failed, matching the replacement to the existing set is still important.

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