Delphi SS12121 Engine Camshaft Position Sensor

Delphi Camshaft Position Sensor SS12121

Delphi SS12121 is an engine camshaft position sensor built for accurate OE-style signal output on select Mercedes-Benz applications. It uses a black housing, oval connector, and 3-pin male terminal design for direct replacement service.

Key Features

• Engine camshaft position sensor for ignition and engine management systems
• Black sensor body with oval connector shape
• 3-terminal pin connection with male connector and male terminal gender
• No wiring harness included
• Package contents: engine camshaft position sensor and instruction sheet
• OE-standard testing and calibration for accurate readings

Detailed Description

Delphi SS12121 is engineered for Mercedes-Benz vehicles that rely on precise camshaft position input for engine timing and control. Delphi validates and calibrates its sensors to OE standards, helping deliver consistent signal accuracy for the engine control module. This part cross-references Standard Ignition PC973 for the same application. Common fitment includes Mercedes-Benz S550, E350, and CLS550 applications, along with other V6 and V8 models listed below. If you are replacing a failing Mercedes-Benz camshaft position sensor, Delphi SS12121 provides a direct-fit service part for the specified vehicles.

Compatible With

• Fits 2013-2020 Mercedes-Benz SL550, N/A
• Fits 2016-2019 Mercedes-Benz GLE63 AMG S, N/A
• Fits 2017-2019 Mercedes-Benz GLS550, N/A
• Fits 2017-2019 Mercedes-Benz GLS63 AMG, N/A
• Fits 2012-2018 Mercedes-Benz CLS550, N/A
• Fits 2014-2018 Mercedes-Benz CLS63 AMG S, N/A
• Fits 2013-2018 Mercedes-Benz G63 AMG, N/A
• Fits 2016-2018 Mercedes-Benz GLE350, N/A
• Fits 2012-2017 Mercedes-Benz E550, N/A
• Fits 2017 Mercedes-Benz Maybach S550, N/A
• Fits 2012-2017 Mercedes-Benz S550, N/A
• Fits 2011-2017 Mercedes-Benz S63 AMG, N/A
• Fits 2012-2016 Mercedes-Benz E350, N/A
• Fits 2014-2016 Mercedes-Benz E63 AMG S, N/A
• Fits 2013-2016 Mercedes-Benz GL550, N/A
• Fits 2013-2016 Mercedes-Benz GL63 AMG, N/A
• Fits 2012-2016 Mercedes-Benz SLK350, N/A
• Fits 2012-2016 Mercedes-Benz SLK55 AMG, N/A
• Fits 2012-2015 Mercedes-Benz C350, N/A
• Fits 2013-2015 Mercedes-Benz E400, N/A
• Fits 2012-2015 Mercedes-Benz E63 AMG, N/A
• Fits 2013-2015 Mercedes-Benz GLK350, N/A
• Fits 2012-2015 Mercedes-Benz ML350, N/A
• Fits 2012-2015 Mercedes-Benz ML63 AMG, N/A
• Fits 2013-2014 Mercedes-Benz C300, N/A
• Fits 2011-2014 Mercedes-Benz CL550, N/A
• Fits 2011-2014 Mercedes-Benz CL63 AMG, N/A
• Fits 2012-2014 Mercedes-Benz CLS63 AMG, N/A
• Fits 2013-2014 Mercedes-Benz GL450, N/A
• Fits 2012-2014 Mercedes-Benz ML550, N/A
• Fits 2012 Mercedes-Benz R350, N/A

Common Issues This Sensor Can Address

• Intermittent camshaft position signal faults
• Check engine light related to camshaft sensor performance
• Hard starting or extended crank conditions tied to timing input errors
• Rough idle or drivability concerns caused by inaccurate camshaft data
• Engine control issues on Mercedes-Benz models using the listed OE-style sensor

Installation Notes and Tips

Verify connector shape, terminal count, and vehicle application before installation. The SS12121 uses a 3-pin male connector with an oval shape and does not include a wiring harness. Compare the original sensor to the replacement part and follow the instruction sheet included in the package. For Mercedes-Benz E350, S550, and CLS550 service work, confirm the exact model year and engine configuration against the fitment list before replacing the sensor.

Quality Assurance

Delphi backs this camshaft position sensor with OE development and product validation methods. Each sensor is tested and calibrated to OE standards to support accurate readings and reduce repeat repairs.