420664049 Camshaft Position Sensor for Sea-Doo Speedster 155 1503 2007-2011

Camshaft Position Sensor for Sea-Doo Speedster

This camshaft position sensor, part number 420664049, monitors camshaft rotation and reports timing data to the engine management system on Sea-Doo Speedster 155 1503 watercraft.

Overview

This camshaft position sensor for Sea-Doo Speedster delivers the timing signal the ECU needs to sequence ignition and fuel delivery correctly on 1503 engines. The sensor replaces part number 420664049 and is built to keep 2007 through 2011 Speedster 155 models running cleanly. Install it to restore accurate cam timing on a personal watercraft used for recreation or rental service.

Built For Performance

• Direct replacement for part number 420664049
• Resists heat and vibration common to marine engine bays
• Sealed connector housing helps keep moisture out
• Provides stable signal output across the RPM range
• Compact body fits the factory mounting location

Fits These Machines

• for Sea-Doo Speedster 155 with 1503 engine
• for Sea-Doo Speedster 1503 models from 2007 to 2011

On-The-Job Use

• Routine replacement when timing codes appear
• Diagnosing rough running or hard starting on the water
• Engine rebuilds and top-end service work
• Restoring proper ignition sequencing after sensor failure

Specs At A Glance

Good To Know

Q: How do I know if this sensor has failed? A: Common signs include hard starting, misfires, and diagnostic trouble codes for camshaft position. Testing signal output at the connector is the quickest way to confirm a fault.

Q: Does this sensor need calibration after installation? A: No special calibration is normally required, since the ECU reads the signal directly. Clear any stored codes and verify timing data after the swap.

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