420664049 Camshaft Position Sensor for Sea-Doo Spark 90 3Up 900 2021-2026

Camshaft Position Sensor for Sea-Doo Spark 90 3Up 900

This camshaft position sensor, reference 420664049, monitors camshaft rotation and reports timing data to the engine management system on Sea-Doo Spark 90 3Up 900 watercraft.

Overview

This camshaft position sensor for Sea-Doo Spark 90 3Up 900 delivers the timing signal the ECU needs to manage spark and fuel delivery accurately. The camshaft position sensor 420664049 helps keep ignition timing consistent so the 900 engine runs cleanly across the rpm range. It suits riders replacing a failed or intermittent sensor on their Spark.

Built For Performance

• Direct replacement for camshaft position sensor reference 420664049
• Housing designed to seat in the factory mounting location
• Electrical connector configured for the original harness plug
• Sealed body resists water and spray exposure in the engine bay
• Constructed for consistent signal output as camshaft speed rises

Fits These Machines

• for Sea-Doo Spark 90 3Up 900, 2021-2026

On-The-Job Use

• Restoring timing signal after a no-start or rough-running diagnosis
• Routine replacement during top-end or ignition service
• Keeping scheduled maintenance on personal watercraft on track

Specs At A Glance

Good To Know

Q: Will this sensor plug into the stock connector? A: The connector matches the factory harness plug used on the listed Spark 90 3Up 900 model years. Confirm the connector shape on your machine before ordering.

Q: Does a bad camshaft position sensor always stop the engine from running? A: A failing sensor can cause hard starting, rough running, or a no-start condition depending on how the signal degrades. Fault codes and a scan tool check help confirm the sensor before replacement.

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