Sea-Doo / Williams Camshaft Position Sensor – OEM 420664045

Description

Camshaft Position Sensor – OEM Replacement 420664045 | Sea-Doo, Ski-Doo, Williams Tender

The camshaft position sensor is a critical electronic component of the Rotax engine management system. It transmits the camshaft's real-time position to the ECU, enabling precise fuel injection and ignition. A faulty sensor leads to misfires, loss of power, or an engine that won't start. This OEM Standard quality replacement is compatible with a wide range of Rotax 4-Tec 1503/1630 cc and ACE 900 cc engines, covering Sea-Doo jet skis, Ski-Doo snowmobiles, and Williams jet tenders since 2002.

Features

• Main Reference: 420664045
• OEM Cross References: 420664042, 420664046, 420664044, 420664043, 420664041, 420664040, 420664049, 290664040
• Williams Reference: 02-1089
• Type: Photoelectric Camshaft Position Sensor
• Placement: Camshaft
• Standard: OEM Standard (hysteresis, linearity, repeatability, resolution, sensitivity)
• Condition: New
• Package Contents: 1x Camshaft Position Sensor
• Weight: 50 g
• Origin: China

Compatibility

⚠️ Crucially check your OEM part number or VIN before ordering. If in doubt, contact us with a photo of your original part.

Sea-Doo (Jet Skis & PWC)

4-Tec 1503 / 1630 cc Engines (2002 onwards) & ACE 900 cc (2014 onwards)

• GTX 155 (2007–2019)
• GTX 215 (2007–2016)
• GTX 230 (2017–2020)
• GTX 170 (2020)
• GTX 300 (2017–2020)
• GTX 260 (2012–2017)
• GTX S 155 (2012–2017)
• GTI 90 (2018–2021)
• GTI 130 (2008–2020)
• GTI 155 (2008–2019)
• GTS 130 (2011–2017)
• GTR 215 (2012–2016)
• GTR 230 (2017–2020)
• RXP 155 (2008)
• RXP 215 (2008–2009)
• RXP X 255 (2008–2016)
• RXP 300 (2018–2019)
• RXT 215 (2008–2010)
• RXT 230 (2018–2019)
• RXT 300 (2018–2020)
• RXT X 255 (2008–2009)
• RXT X 260 (2010–2016)
• Wake 155 (2009–2019)
• Wake 170 (2020)
• Wake PRO 215 (2009–2016)
• Wake PRO 230 (2017–2020)
• Spark ACE 900 2UP/3UP (2014–2015)
• Spark 900 ACE / HO ACE (2017–2021)
• Fish Pro (2019)
• Fish Pro 170 (2020)

Ski-Doo (Snowmobiles)

• Renegade 600 (2014–2019, 2023)
• Renegade 900 (2014–2019)
• Renegade 1200 (2012–2018)
• TNT 900 (2014–2015)
• TNT 1200 (2012–2015)
• MXZ 600 (2015–2018)
• MXZ 900 (2014–2018)
• MXZ 1200 (2012–2018)
• Tundra 600 (2018–2019, 2023)
• GSX 900 (2014–2015)
• GSX 1200 (2012–2015)
• Expedition 1200 (2012–2019)

Williams Tender (Jet Tenders)

Williams Reference: 02-1089

• Williams 280 Minijet
• Williams 285/325 Turbojet (since 2019)
• Williams 345/395/435 Sportjet (Std, Rotax ACE 903 engine)
• Williams 435 Sportjet (Sport, Rotax ACE 1503 & ACE 1603 engines)
• Williams 400/460/520 Sportjet
• All Rotax-powered jet tender models

Key Features

1. OEM Standard Replacement – Guaranteed Reliability

This sensor meets original BRP/Rotax specifications: hysteresis, linearity, repeatability, resolution, and sensitivity comply with OEM standards. No compromise on the accuracy of the signal sent to the ECU — your engine regains its original performance.

2. Multi-Brand Rotax Compatibility

A single sensor covers an exceptionally wide range: Sea-Doo jet skis (4-Tec and ACE engines), Ski-Doo snowmobiles, and Williams jet tenders. Ideal for marine repair shops and owners of multiple Rotax vehicles.

3. Quick Diagnosis – Symptoms to Identify

A faulty camshaft position sensor manifests as: misfires, check engine light on (P0340/P0341 code), difficult or impossible starting, significant power loss. Replacing this sensor resolves these symptoms in most cases without extensive intervention.

Installation and Tips

1. Pre-check: Confirm your OEM reference (see list above) or VIN before ordering.
2. Disconnect: Turn off the ignition and disconnect the battery before any electrical work.
3. Replacement: Disconnect the original sensor's connector, unscrew the fastener, install the new sensor, and reconnect.
4. Reset: Clear fault codes with a diagnostic tool after replacement.
5. Unsure?: Send us a photo of your original part or your serial number — we will confirm compatibility before shipping.

Get your Rotax engine back in optimal condition with this camshaft position sensor – the precision part your Sea-Doo, Ski-Doo, or Williams Tender is waiting for.