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Speed / Reference / Knock Sensors
By OE Match
.jpg?width=197 "Crankshaft Position Sensor, Cylinder 6-10. Porsche 918 Carrera GT - 98060611300, 98060611301 - 114545")
- Porsche Carrera GT 2003-06
Restore accurate engine speed and crankshaft position monitoring with this OE Match Crankshaft Position Sensor, specified for the cylinders 6–10 application on compatible Porsche engines.
Fits:- Porsche Carrera GT 2003-06
Diagram Ref No 40
The crankshaft position sensor is a critical engine-management component. It monitors the rotational position and speed of the crankshaft and sends this information to the engine control unit (ECU). The ECU uses this signal to coordinate essential functions such as ignition timing and fuel injection.
Accurate crankshaft position information allows the engine management system to determine precisely where the engine is within its operating cycle. If the sensor signal becomes weak, intermittent or disappears completely, the ECU may be unable to control ignition and injection correctly. This can lead to difficult starting, misfires, poor running or a complete no-start condition.
Electrical sensors can deteriorate through age, repeated heat cycles, vibration, damaged wiring or connector problems. Some failures can also be temperature-related, with the sensor working correctly when cold but becoming unreliable once the engine reaches operating temperature.
This OE Match Crankshaft Position Sensor provides a high-quality replacement for a faulty or damaged sensor, helping restore accurate engine timing information and dependable engine-management operation.
What This Product Does:
- Monitors crankshaft rotational position.
- Measures crankshaft speed or engine RPM.
- Sends crankshaft position information to the ECU.
- Helps the ECU determine correct engine timing.
- Supports accurate ignition control.
- Supports correctly timed fuel injection.
- Helps maintain smooth and consistent engine operation.
- Provides essential information during engine starting.
- Supports accurate engine-management diagnostics.
- Helps maintain reliable performance across changing engine speeds and loads.
- Replaces an intermittent, damaged or failed sensor.
- Is specified for the applicable cylinders 6–10 position/application.
- Engine cranks but does not start.
- Intermittent starting problems.
- Extended cranking before the engine starts.
- Engine unexpectedly cutting out.
- Engine stalling when hot.
- Engine restarting after it has cooled down.
- Intermittent loss of engine power.
- Rough or inconsistent engine operation.
- Engine misfires.
- Hesitation during acceleration.
- Check engine or engine-management warning light.
- Crankshaft position sensor-related diagnostic fault codes.
- Engine speed signal disappearing during diagnostic testing.
- Tachometer or RPM information behaving abnormally where applicable.
- Damaged sensor wiring or electrical connector.
- Heat-related intermittent sensor failure.
Why Replacement Matters:
- A sensor that fails completely can potentially prevent the engine from starting. An intermittent sensor can be more difficult to diagnose because the vehicle may operate normally before suddenly stalling or refusing to restart.
- Heat-related deterioration is particularly troublesome. A failing sensor may work when the engine is cold but lose its signal as temperatures rise, potentially causing the engine to cut out during operation.
- An inaccurate or unstable signal can also contribute to misfires, poor performance and engine-management warning lights.
- Because crankshaft position information is directly related to ignition and injection control, unresolved sensor faults can compromise overall engine reliability and may leave the vehicle unable to start.
- Replacing a defective component with this OE Match Crankshaft Position Sensor helps restore accurate engine speed and position information, dependable starting and correct engine-management operation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98060611301
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche Carrera GT 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
Fits:
Porsche 986 Boxster 1997-04
Porsche 996 C2 / C4 / C4S 1998-05
Porsche 996 Turbo 1998-05
Porsche 996 GT3 2000-05
Porsche 955 Cayenne S / Turbo 2003-06
Porsche Carrera GT 2004-06
This product supersedes Porsche's old part numbers:
- 99660612100
- 99660612500
Click 'Zoom in' for large parts diagram.
Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660612501
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.
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