420664049 Camshaft Position Sensor for Sea-Doo Challenger SE 155 1503 2007-2009

Camshaft Position Sensor for Sea-Doo Challenger/SE 155 1503

This camshaft position sensor replaces OEM 420664049 and delivers the timing signal your watercraft engine needs to run cleanly and start reliably.

Overview

This camshaft position sensor is a direct-fit replacement for Sea-Doo Challenger and SE 155 models running the 1503 engine. It reads camshaft rotation and sends that signal to the engine management system so fuel delivery and ignition timing stay accurate. A smart pick for riders replacing a failed sensor or restoring a 2007 to 2009 watercraft.

Built For Performance

• Direct replacement for OEM part number 420664049
• Reads camshaft position to keep ignition timing on spec
• Sealed housing built to handle marine engine bay conditions
• Plug-and-play connector for a straightforward install
• Stable signal output for consistent engine starts
• Compatible with the 1503 four-stroke engine platform

Fits These Machines

• for Sea-Doo Challenger 155
• for Sea-Doo Challenger SE 155
• for Sea-Doo 1503-equipped models 2007-2009

On-The-Job Use

• Replacing a failed or intermittent camshaft sensor
• Restoring proper ignition timing after a no-start condition
• Routine maintenance on older 1503 engines
• Keeping fuel delivery and spark timing synchronized

Specs At A Glance

Good To Know

Q: Will this sensor fix a rough-running engine? A: A camshaft position sensor that has failed or gone intermittent can cause misfires, hard starts, or stalling. Replacing it with this unit restores the signal your engine management system relies on.

Q: Does this work on both Challenger and SE models? A: Yes, this sensor is built to fit Sea-Doo Challenger and SE 155 models equipped with the 1503 engine from 2007 to 2009. Always confirm your model year and engine size before ordering.

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