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Porsche > 993 (911) (1994-1998) > 993 (911) C4 1994-97 > Engine Electrical >

Speed / Reference / Knock Sensors

Speed / Reference / Knock Sensors

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DISPLAYING 1 to 12 (of 12 products)
Impulse / Speed Reference Sensor Adaptor Kit. Porsche 964 / 993 - 91160621703, 99360621701, 99360621701, 0261210136, 0261210205, 99965287122, 99970416140, 99965291640, 99660610500
2
Impulse / Speed Reference Sensor Adaptor Kit. Porsche 964 / 993
ADAPTORKIT01
Product Information
Product Information
Impulse / Speed Reference Sensor Adaptor Kit.



Fits:
Porsche 964 1989-94
Porsche 993 1995-98

For more information see  technical document.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

ADAPTORKIT01
91160621703
99360621701
99360621701
0261210136
0261210205
99965287122
99970416140
99965291640
99660610500

The product you are viewing cross references to these numbers
Impulse / speed reference sensor with adaptor kit. Porsche 964 / 993 / 996 turbo - 91160621703, 99360621701, 99360621701 - 0261210136, 0261210205
3
Impulse / speed reference sensor with adaptor kit. Porsche 964 / 993 / 996 turbo
99660610500/1KIT
Product Information
Product Information
Impulse / speed reference sensor.

Fits:
Porsche 964 - 1989 to 1994
Porsche 993 - 1995 to 1998 
Porsche 996 Turbo - 2001 to 2005 (6-speed Manual transmission)

Speed sensors, also referred to as pulse generators, are often the source of various errors. These sensors provide critical speed data required for the engine electronics to function properly, enabling regulation through feedback control. Depending on the vehicle's control system, pulse generators can serve as either camshaft or crankshaft sensors. Our spare parts program includes a wide range of pulse generators to meet your needs.

Starting with the 1996 model year, knock sensors, speed sensors, and temperature sensors were upgraded with improved plug connections. Using this conversion kit, you can easily update your vehicle’s wiring harness to the latest connector standard.

Please note: this part has been changed by Porsche and you will require the adaptor kit for plug connector if you are changing the original item.

Diagram ref no 13




Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99660610500
91160621703
99360621701
99360621701

The product you are viewing cross references to these numbers
Impulse / speed reference sensor with adaptor kit. Porsche 964 / 993 / 996 turbo - 91160621703, 99360621701, 99360621701 - 0261210136, 0261210205
3
Impulse / speed reference sensor with adaptor kit. Porsche 964 / 993 / 996 turbo
99660610500/3KIT
Product Information
Product Information
Impulse / speed reference sensor.

Fits:
Porsche 964 - 1989 to 1994
Porsche 993 - 1995 to 1998 
Porsche 996 Turbo - 2001 to 2005 (6-speed Manual transmission)

Speed sensors, also referred to as pulse generators, are often the source of various errors. These sensors provide critical speed data required for the engine electronics to function properly, enabling regulation through feedback control. Depending on the vehicle's control system, pulse generators can serve as either camshaft or crankshaft sensors. Our spare parts program includes a wide range of pulse generators to meet your needs.

Starting with the 1996 model year, knock sensors, speed sensors, and temperature sensors were upgraded with improved plug connections. Using this conversion kit, you can easily update your vehicle’s wiring harness to the latest connector standard.

Please note: this part has been changed by Porsche and you will require the adaptor kit for plug connector if you are changing the original item.

Diagram ref no 13




Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99660610500
91160621703
99360621701
99360621701

The product you are viewing cross references to these numbers
Electrical Plug Housing - Multiple Applications. Porsche 964/993/996 Carrera & Turbo & GT3 / 986 Boxster - 99965291640
2
Electrical Plug Housing - Multiple Applications. Porsche 964/993/996 Carrera & Turbo & GT3 / 986 Boxster
Special Order item
99965291640
Product Information
Product Information

Electrical plug housing - multiple applications (see below).

Porsche 986 Boxster 1997-04
- Camshaft position sensor
- Throttle valve
- Ignition coil

Porsche 996 Carrera & GT3 1998-05
- Ignition coil

Porsche 964/993 Carrera & Turbo 1994-98
- Crankshaft position sensor



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99965291640
99965291640

The product you are viewing cross references to these numbers
Electrical Plug Housing - Multiple Applications. Porsche 964/993/996 Carrera & Turbo & GT3 / 986 Boxster - 99965291640 - 1928402868
2
Electrical Plug Housing - Multiple Applications. Porsche 964/993/996 Carrera & Turbo & GT3 / 986 Boxster
99965291640/1
Product Information
Product Information

Electrical plug housing - multiple applications (see below).

Porsche 986 Boxster 1997-04
- Camshaft position sensor
- Throttle valve
- Ignition coil

Porsche 996 Carrera & GT3 1998-05
- Ignition coil

Porsche 964/993 Carrera & Turbo 1994-98
- Crankshaft position sensor



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99965291640
99965291640

The product you are viewing cross references to these numbers
Ignition / Cam Sensor Kit. Porsche 964 / 993 - AMS9050180, AMS9050179
4
Ignition / Cam Sensor Kit. Porsche 964 / 993
AMS90501
Product Information
Product Information

Ignition / Cam Sensor Kit by Adapt Motorsport for Porsche 911 type 964 and 993 applications. The assembly reads a trigger disc on the power-steering side of the engine and is designed for installation while the engine remains in the car.

Fits:

  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 993 (911) C2 1994-97
  • Porsche 993 (911) C4 1994-97
  • Porsche 993 (911) RS 1994-97
  • Porsche 993 (911) C2S 1994-97
  • Porsche 993 (911) C4S 1994-97

What This Product Does

The kit provides a camshaft trigger arrangement for compatible engine-management installations. Its trigger disc is monitored by the supplied sensor, avoiding the need to drill the camshaft within the engine.

Functions

  • Positions the supplied sensor beside the camshaft trigger disc
  • Provides a camshaft reference signal arrangement on the power-steering side of the engine
  • Supports installations with either retained or removed power steering
  • Allows installation without removing the engine


Technical Details

  • Two installation versions are offered for different power steering configurations
  • CNC-machined sensor holder or cover finished in black anodising
  • Trigger disc finished with yellow zinc plating
  • Version 1 uses a sensor holder fitted to the power steering cover; the trigger disc replaces the washer beneath the power steering pulley bolt
  • Version 1 requires a hole in the original aluminium belt cover plate on the 964 or the plastic belt cover on the 993
  • Version 2 uses a camshaft-mounted trigger disc and a sensor cover plate fitted at the original power steering bracket location


Kit Contents

Version 1 includes the sensor holder bracket, sensor and connector kit, trigger disc, fasteners, sealing O-ring and spacers for the 993 cover. Version 2 includes the sensor mounting cover plate, sensor and connector kit, trigger disc and fasteners.

Power steering components such as the pulley, cover plate, bolt and associated fasteners are not included. Version 2 is unsuitable for aftermarket camshafts that do not have the power steering drive extension.

Optional Distributor Plug Kit

For coil-on-plug installations where the distributor has been removed, an optional plug kit closes the remaining opening in the crankcase. The plug is suitable for six-cylinder 911 engines in 2.7L, 3.0L, 3.2L and 3.6L configurations.

FAQs

  • Which version is required?
    Choose Version 1 when retaining the original 964 or 993 power steering pump. Choose Version 2 when the pump has been removed and the camshaft still has its power steering drive extension.
  • Does the engine need to be removed?
    No. The cam sensor arrangement is designed to be installed with the engine in the car.
  • Can Version 2 be used with an aftermarket camshaft?
    Only when the camshaft includes the required power steering drive extension.
  • Are power steering parts supplied?
    No. The pulley, power steering cover plate, pulley bolt and related fasteners are not part of the kit.
Impulse / speed reference sensor. Porsche 964 / 993 / 996T - 91160621703, 99360621701, 99360621701, 0261210136, 0261210205
1
Impulse / speed reference sensor. Porsche 964 / 993 / 996T
Special Order item
99660610500
Product Information
Product Information
Impulse / speed reference sensor.



Fits:
Porsche 964 1989-94  (requires  ADAPTORKIT01)
Porsche 993 1995-98 (requires  ADAPTORKIT01)
Porsche 996 Turbo 2001-05 (6-speed Manual transmission)

Please note: this part has been changed by Porsche and you may require adaptor kit for plug connector.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99660610500
91160621703
99360621701
99360621701
0261210136
0261210205

The product you are viewing cross references to these numbers
Impulse / speed reference sensor. Porsche 964 / 993 / 996T - 91160621703, 99360621701, 99360621701, 0261210136, 0261210205
2
Impulse / speed reference sensor. Porsche 964 / 993 / 996T
99660610500/1
Product Information
Product Information
Impulse / speed reference sensor.

Fits:
Porsche 964 1989-94 (requires  ADAPTORKIT01 )
Porsche 993 1995-98 (requires  ADAPTORKIT01)
Porsche 996 Turbo 2001-05 (6-speed Manual transmission)

Please note: this part has been changed by Porsche and you may require adaptor kit for plug connector.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99660610500
91160621703
99360621701
99360621701
0261210136
0261210205

The product you are viewing cross references to these numbers
Impulse / speed reference sensor. Porsche 964 / 993 / 996T - 91160621703, 99360621701, 99360621701, 0261210136, 0261210205
2
Impulse / speed reference sensor. Porsche 964 / 993 / 996T
99660610500/3
Product Information
Product Information
Impulse / speed reference sensor.

Fits:
Porsche 964 1989-94  (requires ADAPTORKIT01)
Porsche 993 1995-98 (requires  ADAPTORKIT01)
Porsche 996 Turbo 2001-05 (6-speed Manual transmission)

Please note: this part has been changed by Porsche and you may require adaptor kit for plug connector.

Replacement crankshaft position sensor also known as an impulse or pulse sender. The crankshaft position sensor continuously monitors the rotational speed and position of the crankshaft as it spins. This information is transmitted as a signal to the engine control unit (ECU), which uses it to control key functions like ignition timing, fuel injection timing, and engine speed cues. Without a properly functioning sensor, the ECU may not be able to accurately time spark and fuel delivery, which can cause poor performance, rough idling, misfires, or failure to start.

The crankshaft position sensor is vital to engine management accuracy. If it fails or generates inconsistent signals, the ECU may not be able to properly time spark and fuel delivery, leading to:
• Poor engine performance
•  Stalling, rough idle, or hesitation
•  Hard starting or no-start conditions
•  Fault codes related to timing or crank sensor errors
Replacing a worn or failed sensor restores accurate rotational feedback to the ECU, helping maintain engine drivability and reliability.

Replace the crankshaft position sensor if you notice:
•  Engine misfires or rough idle
•  Stalling or limp performance
•  Engine won’t start but cranks
•  Diagnostic codes related to crank position 
•  Inconsistent tachometer readings

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99660610500
91160621703
99360621701
99360621701
0261210136
0261210205

The product you are viewing cross references to these numbers
Knock sensor. Porsche 993 - 99360614100, 0261231118
2
Knock sensor. Porsche 993
Special Order item
99360614100
Product Information
Product Information
Knock sensor


Fits:
Porsche 993 1994-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 7

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99360614100
99360614100
0261231118

The product you are viewing cross references to these numbers
Knock sensor. Porsche 993 1994-98
2
Knock sensor. Porsche 993 1994-98
99360614100/1
Product Information
Product Information
Knock sensor.



Fits:
Porsche 993 1994-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Knock sensor. Porsche 993 1994-98 - 99360614100, 0261231118
3
Knock sensor. Porsche 993 1994-98
99360614100/2
Product Information
Product Information
Knock sensor. Porsche 993 1994-98



Fits:
Porsche 993 1994-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 7

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99360614100
99360614100
0261231118

The product you are viewing cross references to these numbers
DISPLAYING 1 to 12 (of 12 products)
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About Speed / Reference / Knock Sensors

Speed, Reference & Knock Sensors – Precision Monitoring for Porsche Engine Performance

Speed, reference, and knock sensors are crucial components in your Porsche’s engine management system. They work together to provide the engine control unit (ECU) with accurate data about crankshaft position, engine speed, and vibration — allowing the system to adjust timing, fueling, and ignition for maximum performance and protection.

At Design911, we supply a comprehensive selection of genuine and high-quality sensors for all Porsche Models, including 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each sensor is engineered for precise signal output, reliability, and durability, ensuring consistent performance and optimal engine operation.

What Do Speed, Reference & Knock Sensors Do?

These sensors play distinct yet complementary roles in your Porsche’s electronic control system:

  • Speed Sensors: Measure rotational speed of the wheels or crankshaft to optimise traction, stability, and engine timing.
  • Reference Sensors: Provide accurate engine position data to control ignition timing and fuel injection.
  • Knock Sensors: Detect engine detonation (pinging) and send signals to the ECU to adjust ignition timing, preventing engine damage.

Together, they ensure your Porsche runs smoothly, efficiently, and safely under all driving conditions.

Why Do These Sensors Fail?

Due to exposure to heat, vibration, and contamination, these sensors can degrade over time. Common causes of failure include:

  • Heat damage from proximity to engine or exhaust components.
  • Wiring corrosion or connector oxidation reducing signal accuracy.
  • Mechanical wear on sensor tips or mounting points.
  • Contamination from oil, dirt, or debris interfering with readings.
  • Electrical interference or internal circuitry failure.

Typical symptoms of sensor failure include poor acceleration, engine misfires, erratic idle, loss of power, increased fuel consumption, or a check engine light.

Why Replace Faulty Sensors?

A failing sensor can lead to poor performance, reduced fuel efficiency, and even engine damage if left unchecked. Replacing worn or damaged sensors ensures the ECU receives accurate data, maintaining safe and efficient operation.

Benefits of replacement include:

  • Restored ignition timing and fuel efficiency.
  • Improved throttle response and smooth acceleration.
  • Protection against detonation and engine wear.
  • Reliable performance with manufacturer-quality precision.

All sensors in our range are designed with high-quality materials, advanced shielding, and precision calibration to deliver consistent readings and long-term reliability in demanding conditions.

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