Speed / Reference / Knock Sensors

OE Match crankshaft pulse sender, reference 94460611500, for selected Porsche 911, 924S, 928, 944 and 968 applications. Catalogued against the relevant Porsche reference, this engine electrical sensor is intended for installation in the specified DME engine-management systems.

What This Product Does

The pulse sender monitors crankshaft rotation and provides the engine control unit with the reference information needed to determine engine speed or position. Depending on the vehicle’s DME configuration, this signal supports the accurate control of ignition timing and fuel injection.

Functions

• Detects crankshaft rotation or a defined reference point
• Transmits an electrical pulse signal to the DME control unit
• Supports calculation of engine speed and crankshaft position
• Provides timing information for ignition and fuel-injection control
• Helps the engine-management system recognise that the engine is cranking

Technical Details

• Part reference: 94460611500
• Component descriptions: pulse sender, crankshaft position sensor, crank-angle sensor and speed reference sensor
• Earlier cross-references: 94460601500 and 94460601700
• The Porsche 944 and 924S engine-electrics catalogues specify two senders for applicable installations
• The Porsche 968 1992–1995 engine-electrics diagram specifies one pulse sender
• Quantity and sensor function vary by engine-management arrangement; confirm the vehicle specification before ordering

Symptoms of Fault

• Engine cranks but does not start
• Intermittent starting difficulty, particularly when the engine is hot
• Sudden stalling or cutting out while running
• Misfires, hesitation or an uneven idle caused by an unstable signal
• Tachometer signal dropping unexpectedly on applicable vehicles
• Stored crankshaft, reference-signal or engine-speed fault information
• Cracked cable insulation, heat damage or corrosion at the connector

Why Replacement Matters

A weak or missing pulse signal can prevent the DME from establishing the correct crankshaft reference. This may interrupt ignition and injection control, resulting in intermittent running faults or a complete no-start condition. Before replacing the sender, inspect its wiring, connector, mounting, sensor gap where applicable, battery condition and engine earth connections. Testing the signal during cranking can help distinguish a defective sender from a wiring or control-unit fault.

Fits

• Porsche 911 & 912 (1965–1989): 911 3.3L Turbo (930) 1978–1989; 911 3.2L 1984–1986; 911 3.2L G50 1987–1989
• Porsche 924 (1977–1988): 924S 2.5L 1986–1987; 924S 2.5L 1988
• Porsche 928 (1978–1995): 928 4.5L 1978–1982; 928S 4.7L 1981–1983; 928S2 4.7L 1984–1986; 928S4 5.0L 1987–1992; 928GT 5.0L 1989–1991; 928GTS 5.4L 1992–1995
• Porsche 944 (1982–1991): 944 2.5L 8V 1982–1987; 944 2.7L 8V 1988–1989; 944S 2.5L 16V 1987–1988; 944S2 3.0L 16V 1989–1991; 944 Turbo 2.5L 8V 1985–1988; 944 Turbo 2.5L 8V 1989–1991; 944 Turbo S 2.5L 8V 1988
• Porsche 968 (1992–1995): 968 3.0L 1992–1994; 968 Sport 3.0L 1994–1995; 968 CS 3.0L 1993–1995; 968 Turbo S 3.0L 1993–1994

Check fitment for your specific vehicle (model, year, engine) before ordering.

FAQs

• Why can a failed reference sender cause a no-start?
  Without a valid crankshaft signal, the DME may be unable to time the ignition and fuel-injection events.
• Why might the fault be intermittent?
  Heat, vibration, ageing insulation or an internal electrical fault can cause the signal to disappear only under certain conditions.
• Should the sensor be replaced from a fault code alone?
  No. Inspect the connector and wiring, verify power and earth conditions, and test the sender signal where suitable diagnostic equipment is available.
• How many senders are required?
  The required quantity depends on the Porsche model and engine-management arrangement. Some 924S and 944 applications use two, while the supplied 968 diagram identifies one.
• Does installation clearance matter?
  Yes. The sensor must be correctly mounted, and the specified gap should be verified where the application uses an adjustable mounting arrangement.

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

94460611500

The product you are viewing cross references to these numbers

Hall Sender Cylinders 1-4.
Maintain accurate engine timing and reliable ignition performance with this Genuine Porsche Hall Sender for Cylinders 1–4, manufactured to Porsche's original equipment specification and supplied under part number 94460617002. This Hall sender is an essential component of the engine management system, providing the control unit with precise position and timing signals required for ignition and fuel injection on cylinders 1–4.

Fits:

• Porsche 944S 2.5L 16V 1987-88
• Porsche 944S2 3.0L 16V 1989-91
• Porsche 968 3.0L 1992-94
• Porsche 968 Sport 3.0L 1994-95
• Porsche 968 CS 3.0L 1993-95
• Porsche 968 Turbo S 3.0L 1993-94
• Porsche 928S4 5.0L 1987-92
• Porsche 928GT 5.0L 1989-91
• Porsche 928GTS 5.4L 1992-95  

Diagram Ref No 23

Over time, the original Hall sender can deteriorate due to heat, vibration, and age, leading to intermittent or complete signal loss. This can result in ignition timing faults, poor engine performance, difficult starting, or engine stalling. Replacing a faulty Hall sender restores reliable communication between the engine and management system, making this Genuine Porsche component ideal for routine maintenance, engine repairs, concours restorations, and Porsche restoration projects.  

What This Product Does:

• Monitors engine position for cylinders 1–4.
• Provides precise timing signals to the engine management system.
• Supports accurate ignition timing.
• Assists correct fuel injection sequencing.
• Restores reliable engine management performance.
• Replaces worn or faulty original Hall senders.
• Manufactured to Porsche's original equipment specification.

Symptoms Of Wear Or Failure:

• Engine cranks but fails to start.
• Intermittent engine stalling.
• Misfiring or rough engine operation.
• Loss of engine power.
• Poor throttle response.
• Engine management fault codes relating to ignition timing or position sensing.
• Intermittent ignition system faults.

Why Replacement Matters:

• The Hall sender is a critical sensor within the ignition and engine management system, supplying the precise timing information required for correct ignition and fuel delivery. A failing sensor can cause inaccurate timing signals, leading to poor engine performance, increased emissions, starting difficulties, or complete engine shutdown.
• Replacing the Hall sender with a Genuine Porsche component restores accurate engine timing and dependable engine management performance while maintaining the factory specification of the ignition system. Manufactured to Porsche's original equipment specification and supplied under part number 94460617002, this genuine component delivers the fit, reliability, and durability expected for Porsche maintenance, repairs, concours restorations, and long-term vehicle preservation.

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

94460617002

The product you are viewing cross references to these numbers

Hall Sender Cylinders 1-4.

Maintain accurate engine timing and reliable ignition performance with this OE Match Hall Sender for Cylinders 1–4, manufactured as a direct replacement. Produced to OE-style specifications, this Hall sender is an essential component of the engine management system, providing the control unit with precise position and timing signals required for ignition and fuel injection on cylinders 1–4.

Fits:

• Porsche 944S 2.5L 16V 1987-88
• Porsche 944S2 3.0L 16V 1989-91
• Porsche 968 3.0L 1992-94
• Porsche 968 Sport 3.0L 1994-95
• Porsche 968 CS 3.0L 1993-95
• Porsche 968 Turbo S 3.0L 1993-94
• Porsche 928S4 5.0L 1987-92
• Porsche 928GT 5.0L 1989-91
• Porsche 928GTS 5.4L 1992-95  

Diagram Ref No 23

Over time, the original Hall sender can deteriorate due to heat, vibration, and age, leading to intermittent or complete signal loss. This can result in ignition timing faults, poor engine performance, difficult starting, or engine stalling. Replacing a faulty Hall sender restores reliable communication between the engine and management system, making this OE Match component ideal for routine maintenance, engine repairs, and Porsche restoration projects.  

What This Product Does:

• Monitors engine position for cylinders 1–4.
• Provides precise timing signals to the engine management system.
• Supports accurate ignition timing.
• Assists correct fuel injection sequencing.
• Restores reliable engine management performance.
• Replaces worn or faulty original Hall senders.
• Provides an OE-style fit and dependable quality.

Symptoms Of Wear Or Failure:

• Engine cranks but fails to start.
• Intermittent engine stalling.
• Misfiring or rough engine operation.
• Loss of engine power.
• Poor throttle response.
• Engine management fault codes relating to ignition timing or position sensing.
• Intermittent ignition system faults.

Why Replacement Matters:

• The Hall sender is a critical sensor within the ignition and engine management system, supplying the precise timing information required for correct ignition and fuel delivery. A failing sensor can cause inaccurate timing signals, leading to poor engine performance, increased emissions, starting difficulties, or complete engine shutdown.
• Replacing the Hall sender restores accurate engine timing and dependable engine management performance while maintaining the correct operation of the ignition system. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match Hall sender provides the correct fit, dependable quality, and long-lasting durability, making it an excellent choice for Porsche maintenance, engine repairs, and restoration projects.

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

94460617002

The product you are viewing cross references to these numbers

Impulse / speed reference sensor.



Fits:
Porsche 928
Porsche 924S
Porsche 944
Porsche 968

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

94460611500

The product you are viewing cross references to these numbers

Impulse / speed reference sensor.



Fits:
Porsche 928
Porsche 924S
Porsche 944
Porsche 968

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

94460611500

The product you are viewing cross references to these numbers

Knock sensor.



Fits:
Porsche 928 1991-95

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

92860614400

The product you are viewing cross references to these numbers

Knock sensor. Porsche 928 91-95



Fits:
Porsche 928 1991-95

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

92860614400

The product you are viewing cross references to these numbers

Knock Sensor.

The Knock Sensor is a BOSCH Porsche 928 engine management component designed to detect abnormal combustion events, commonly known as engine knock or detonation. Mounted directly to the engine block, the sensor monitors engine vibrations and sends signals to the engine control unit (ECU), allowing ignition timing to be adjusted instantly to protect the engine from damage while maintaining optimum performance.
Sold Each.
x2 Required Per Car.

Fits:

• Porsche 928GT 5.0L 1989-91
• Porsche 928GTS 5.4L 1992-95

Diagram Ref No 8

This BOSCH knock sensor is engineered for precise vibration detection, fast signal response, and reliable operation under extreme engine temperatures and operating conditions. It plays a critical role in engine protection, fuel efficiency, emissions control, and overall performance.

What This Product Does:

• Monitors engine vibrations for signs of knock or detonation
• Sends real-time data to the engine control unit (ECU)
• Allows automatic ignition timing adjustment to prevent engine damage
• Optimises engine performance and efficiency
• Supports emissions control and fuel economy
• Protects pistons, valves, and internal engine components from harmful combustion events  

Symptoms Of Wear Or Failure:

• Check engine light illumination
• Knock sensor-related fault codes
• Reduced engine performance
• Poor acceleration or sluggish throttle response
• Increased fuel consumption
• Engine running in a protective or reduced-power mode
• Audible engine knocking or pinging under load
• Higher exhaust emissions due to incorrect ignition timing control  

Why Replacement Matters:

• Restores accurate knock detection and engine monitoring
• Ensures proper ignition timing adjustment
• Protects the engine from detonation-related damage
• Improves fuel efficiency and performance
• Reduces the likelihood of engine management faults
• Maintains optimal combustion efficiency and emissions performance
• Supports long-term engine reliability and durability
• Ensures the ECU can safely maximise engine power without risking internal damage

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

92860614400

The product you are viewing cross references to these numbers

Tensioner spring for speedometer impulse sender.

Fits:
Porsche 911 1974-77 - Models with electronic speedometer.
Porsche 911 1978-89 
Porsche 911 Turbo (930) 1975-77 
Porsche 928 1078-91

Related reference numbers
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91566050901

The product you are viewing cross references to these numbers