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Speed / Reference / Knock Sensors
By OE Match
- Porsche 955 Cayenne 3.2L V6 2003-06
Fits:
Porsche 955 Cayenne 3.2L 2004-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 38
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95560610600
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 957 Cayenne 3.6L 2007-10
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
Fits:
Porsche 955 Cayenne 3.2L 2004-05
Porsche 957 Cayenne 3.6L 2008-10
Porsche 958 Cayenne 3.6L 2011>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 17
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95560612500
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 957 Cayenne 3.6L 2007-10
The Crankshaft Position Sensor (CKP) product ref: 95560614700, 95560643300, 0261210178 is a critical engine management component that monitors the exact rotational position and speed (RPM) of the crankshaft. This information is essential for the engine control unit (ECU) to correctly time spark ignition and fuel injection events. On Porsche Cayenne 955 and 957 models, a reliable crankshaft position sensor ensures precise engine timing, optimal performance, smooth running, and efficient fuel combustion.
Fits:
Porsche 955 Cayenne 3.2L 2004-05
Porsche 957 Cayenne 3.6L 2008-10
Click 'Zoom in' for large parts diagram.
Diagram ref no 18
Why This Should Be Replaced
The crankshaft position sensor can fail over time due to heat cycling, vibration, contamination, or electrical wear. When the sensor starts to degrade or fails outright, the ECU loses the ability to accurately determine engine speed and position, which directly impacts performance and drivability.
Replacement is recommended when the sensor is faulty or showing signs of wear, as continued operation with a compromised CKP sensor can lead to more serious engine issues, driveability problems, and component strain.
Common Symptoms of a Failing Crankshaft Position Sensor
A failing or failed crankshaft position sensor typically causes one or more of the following symptoms:
- Engine misfires or runs unevenly
- Hard starting or no start condition
- Stalling, particularly at idle or low speed
- Check Engine Light (CEL) with CKP-related fault codes stored
- Loss of power / hesitation under acceleration
- Irregular tachometer behaviour or incorrect RPM reading
If left unresolved, these issues can lead to increased fuel consumption, catalytic converter damage, and an overall unsafe driving experience.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95560614700
The product you are viewing cross references to these numbers
OEMatch Speed / Reference / Knock Sensors — Fit, Function, Confidence
Carefully selected for Porsche models, these sensors provide the signal inputs the engine control system needs to manage ignition, fuelling and detonation control. The following information explains the different types, common failure modes and what to consider when replacing them on Porsche vehicles.
Available Types
- Speed sensors (wheel and crank speed)
- Reference sensors (crankshaft and camshaft position)
- Knock sensors (detonation monitoring)
Understanding OEMatch Speed / Reference / Knock Sensors
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original speed / reference / knock sensors. OE (Original Equipment) refers to parts matching original specifications for the speed / reference / knock sensors and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM speed / reference / knock sensors engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. Speed sensors report rotational speed for engine or transmission management; reference sensors provide crank or cam position data used to time injection and ignition; knock sensors detect detonation so the ECU can retard timing to protect the engine.
Benefits Include
- Consistent timing and ignition control to support smooth running
- Improved responsiveness through accurate signal input
- Reduced risk of detonation-related damage when a knock sensor is functioning correctly
Why Speed / Reference / Knock Sensors Wear and Fail
- Thermal stress from proximity to exhaust and hot engine components
- Electrical faults caused by connector corrosion, wiring damage or moisture ingress
- Mechanical damage or contamination to sensing elements from oil, debris or impact
The Importance of Replacing with OEMatch Speed / Reference / Knock Sensors
Replacing worn or damaged sensors restores accurate data flow to the ECU, which helps maintain correct ignition timing, fuelling and detonation control on Porsche engines. Timely replacement can prevent drivability issues such as rough idle, misfire or loss of power and supports consistent fuel economy and emissions behaviour across model ranges.
Advantages
- Direct-fit replacements engineered to match original dimensions and tolerances
- Signal characteristics matched to factory expectations for consistent ECU behaviour
- Robust connector and sealing details to resist heat and contamination
Support & Advice
These items affect safety-critical systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified.
