420664049 Camshaft Position Sensor for Sea-Doo Speedster 1 x 155 1503 2012

Camshaft Position Sensor for Sea-Doo

This camshaft position sensor, OEM cross-reference 420664049, monitors camshaft rotation and reports timing data to the engine management system so fuel delivery and ignition stay synchronized.

Overview

This camshaft position sensor for Sea-Doo delivers the timing signal the ECM relies on to fire the ignition and sequence fuel injection correctly. The sensor reads camshaft position and sends that data straight to the engine control module, keeping combustion timed right across the rpm range. It suits riders replacing a failed or intermittent sensor on a 155 1503 equipped Speedster.

Built For Performance

• Direct cross-reference to OEM part number 420664049
• Solid-state sensing element with no moving contact parts to wear out
• Sealed housing built to resist moisture, spray, and engine bay heat
• Factory-style connector for a plug-in fit on the original harness
• Stable signal output for consistent ECM timing decisions

Fits These Machines

• for Sea-Doo Speedster 155 1503 (2012)

On-The-Job Use

• Restoring ignition timing after a no-start or hard-start fault
• Replacing a sensor that throws a camshaft position trouble code
• Routine refresh during top-end or timing chain service
• Diagnostic swaps to isolate an intermittent timing signal

Specs At A Glance

Good To Know

Q: What happens if the camshaft position sensor fails? A: The ECM loses its timing reference, which typically causes hard starting, misfires, or a no-start condition and a stored fault code. Replacing the sensor restores the signal the module needs to run the engine.

Q: Does this sensor need calibration after installation? A: No, it is a plug-in replacement that reads the existing trigger wheel, so no programming is required once it is seated and connected. Clear any stored codes and confirm the fault does not return.

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