Please wait…

Please wait while we process your order,
do not press the back button…

Porsche Cayenne 9PA (955) 2003-2006 955 Cayenne Turbo 4.5L 2003-06 Engine Rebuild Parts Crankcase Parts

Knock Sensor. Porsche 95B Macan 2.0L Petrol 2014-18 › 95890537700

Check vehicle fitment

Porsche

95890537700

Product Information

Knock Sensor.
Restore accurate combustion monitoring and dependable engine management with this Porsche Knock Sensor, part number 95890537700. Designed for compatible Porsche applications, the knock sensor is an important part of the engine management system, detecting abnormal combustion vibrations and allowing the ECU to adjust ignition timing when necessary.

Fits:

Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18

Diagram Ref No 21

During normal operation, the engine management system aims to achieve efficient combustion while protecting the engine from detonation, also known as engine knock or pinging. A knock sensor monitors characteristic vibrations within the engine and sends this information to the ECU. If knock is detected, the ECU can modify ignition timing and other applicable parameters to reduce potentially damaging combustion.

A faulty sensor can provide inaccurate information or no signal at all. The ECU may respond by using a more conservative engine strategy, potentially resulting in reduced performance, increased fuel consumption or an illuminated engine-management warning light.

The Porsche Knock Sensor 95890537700 provides the correct replacement solution for a failed or damaged sensor, helping restore accurate knock detection and proper engine-management operation.

What This Product Does:

Detects vibrations associated with abnormal combustion or detonation.
Sends knock information to the engine control unit.
Allows the ECU to adjust ignition timing when knock is detected.
Helps protect the engine from potentially harmful detonation.
Supports optimum ignition timing under changing operating conditions.
Helps the engine adapt to variations in load and operating conditions.
Contributes to smooth and efficient combustion.
Supports consistent engine performance.
Helps maintain the intended balance between performance and engine protection.
Replaces a failed, damaged or unreliable knock sensor.
Restores correct input to the engine-management system.

Symptoms Of Wear Or Failure:

Check engine or engine-management warning light.
Knock sensor-related diagnostic fault codes.
Reduced engine power.
Sluggish acceleration.
Poor throttle response.
Engine operating in a reduced-performance or protective strategy.
Increased fuel consumption.
Rough or inconsistent engine operation.
Audible pinging or knocking under acceleration or load.
Intermittent engine-management faults.
Wiring or connector damage around the sensor.
Diagnostic readings indicating an implausible or missing knock sensor signal.

Why Replacement Matters:

Detonation occurs when combustion within the cylinder does not proceed in the intended controlled manner. Instead, abnormal pressure waves can develop, producing the characteristic phenomenon known as engine knock.
Persistent or severe knock can subject pistons, cylinder walls, bearings and other internal engine components to unusually high mechanical and thermal loads. The knock monitoring system helps protect against this by allowing the ECU to respond quickly when abnormal combustion is detected.
If a knock sensor fails, the ECU may no longer receive reliable information about combustion vibration. Depending on the engine-management strategy, it may compensate by retarding ignition timing or otherwise restricting performance to provide a greater safety margin.
This can result in noticeably reduced power or efficiency even though the engine continues to run.
Conversely, an inaccurate sensor signal can interfere with the ECU's ability to optimise ignition timing correctly.
Replacing a defective component with the correct Porsche Knock Sensor 95890537700 helps restore accurate combustion monitoring, appropriate ignition control and the engine protection strategy designed into the vehicle.

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

95890537700

95890537700

The product you are viewing cross references to these numbers

Related products

3 3 3

Rear Main Seal - Crankshaft Oil Seal (85x105x11) - for Porsche 986 / 987 / 981 / 718 / 996 / 997 / 991 / 992 / 955 / 958 / 970 / 95B-1

0PB105249/1

Product Information

Rear main seal (crankshaft oil seal) - 85 x 105 x 11.

Fits:
Porsche 986 Boxster 2.5L 1997-99
Porsche 986 Boxster 2.7L 2000-04
Porsche 986 Boxster S 3.2L 2000-04

Porsche 987-1 Boxster 2.7L 2005-08
Porsche 987-1 Boxster S 3.4L 2005-08

Porsche 987-1 Cayman 2.7L 2005-08
Porsche 987-1 Cayman S 3.4L 2005-08

Porsche 987-2 Boxster 2.9L 2009-12
Porsche 987-2 Boxster S 3.4L 2009-12
Porsche 987-2 Boxster Spyder 3.4L 2011-12

Porsche 987-2 Cayman 2.9L 2009-12
Porsche 987-2 Cayman S 3.4L 2009-12
Porsche 987-2 Cayman R 3.4L 2012

Porsche 981 Boxster 2.7L 2012-16
Porsche 981 Boxster S 3.4L 2012-16
Porsche 981 Boxster GTS 3.4L 2015-16
Porsche 981 Boxster Spyder 3.8L 2016

Porsche 981 Cayman 2.7L 2014-16
Porsche 981 Cayman S 3.4L 2014-16
Porsche 981 Cayman GTS 3.4L 2014-16
Porsche 981 Cayman GT4 3.8L 2016

Porsche 718 (982) Boxster 2.0L 2017>>
Porsche 718 (982) Boxster T 2.0L 2020>>
Porsche 718 (982) Boxster S 2.5L 2017>>
Porsche 718 (982) Boxster GTS 2.5L 2018-19
Porsche 718 (982) Boxster GTS 4.0L 2019>>
Porsche 718 (982) Boxster Spyder 4.0L 2019>> - Excludes RS

Porsche 718 (982) Cayman 2.0L 2017>>
Porsche 718 (982) Cayman T 2.0L 2020>>
Porsche 718 (982) Cayman S 2.5L 2017>>
Porsche 718 (982) Cayman GTS 2.5L 2018-19
Porsche 718 (982) Cayman GTS 4.0L 2019>>
Porsche 718 (982) Cayman GT4 4.0L 2019>> - Excludes RS

Porsche 996-1 Carrera 3.4L 1998-01
Porsche 996-1 Carrera 4 3.4L 1999-01

Porsche 996-2 Carrera 3.6L 2002-04
Porsche 996-2 Carrera 4 3.6L 2002-04
Porsche 996-2 Carrera 4S 3.6L 2002-05
Porsche 996-2 Targa 3.6L 2002-04

Porsche 997-1 Carrera 3.6L 2005-08
Porsche 997-1 Carrera 4 3.6L 2006-08
Porsche 997-1 Carrera S 3.8L 2005-08
Porsche 997-1 Carrera 4S 3.8L 2006-08
Porsche 997-1 Targa 4 3.6L 2007-08
Porsche 997-1 Targa 4S 3.8L 2007-08

Porsche 997-2 Carrera 3.6L 2009-12
Porsche 997-2 Carrera 4 3.6L 2009-12
Porsche 997-2 Carrera S 3.8L 2009-12
Porsche 997-2 Carrera GTS 3.8L 2011-12
Porsche 997-2 Carrera 4 GTS 3.8L 2011-12
Porsche 997-2 Carrera 4S 3.8L 2009-12
Porsche 997-2 Targa 4 3.6L 2009-12
Porsche 997-2 Targa 4S 3.8L 2009-12

Porsche 997-2 Turbo / S 3.8L 2010-13

Porsche 991-1 Carrera 3.4L 2012-16
Porsche 991-1 Carrera 4 3.4L 2012-16
Porsche 991-1 Carrera S 3.8L 2012-16
Porsche 991-1 Carrera 4S 3.8L 2012-16
Porsche 991-1 Carrera GTS 3.8L 2015-16
Porsche 991-1 Carrera 4 GTS 3.8L 2016
Porsche 991-1 Targa 4 3.4L 2015-16
Porsche 991-1 Targa 4S 3.8L 2015-16
Porsche 991-1 Targa 4 GTS 3.8L 2015-16

Porsche 991-2 Carrera 3.0L 2017-19
Porsche 991-2 Carrera 4 3.0L 2017-19
Porsche 991-2 Carrera S 3.0L 2017-19
Porsche 991-2 Carrera 4S 3.0L 2017-19
Porsche 991-2 Carrera GTS 3.0L 2017-19
Porsche 991-2 Carrera 4 GTS 3.0L 2017-19
Porsche 991-2 Targa 3.0L 2017-19
Porsche 991-2 Targa 4 3.0L 2017-19
Porsche 991-2 Targa 4 GTS 3.0L 2017-19

Porsche 991-1 Turbo 3.8L 2014-16
Porsche 991-2 Turbo 3.8L 2017-20

Porsche 992-1 Carrera 3.0L 2019-24
Porsche 992-1 Carrera T 3.0L 2023-24
Porsche 992-1 Carrera S 3.0L 2019-24
Porsche 992-1 Carrera GTS 3.0L 2022-24
Porsche 992-1 Carrera 4 3.0L 2019-24
Porsche 992-1 Carrera 4S 3.0L 2019-24
Porsche 992-1 Carrera 4 GTS 3.0L 2022-24
Porsche 992-1 Targa 4 3.0L 2019-24
Porsche 992-1 Targa 4S 3.0L 2019-24
Porsche 992-1 Targa 4 GTS 3.0L 2022-24

Porsche 992-1 Turbo / S 3.7L 2020>>

Porsche 992-2 Carrera 3.0L 2024>>
Porsche 992-2 Carrera T 3.0L 2024>>
Porsche 992-2 Carrera S 3.0L 2024>>
Porsche 992-2 Carrera GTS T-Hybrid 3.6L 2024>>
Porsche 992-2 Carrera 4 GTS T-Hybrid 3.6L 2024>>

Porsche 955 Cayenne S 4.5L V8 2003-06
Porsche 955 Cayenne Turbo 4.5L V8 2003-06

Porsche 957 Cayenne S 4.8L V8 2007-10
Porsche 957 Cayenne GTS 4.8L V8 2008-10
Porsche 957 Cayenne Turbo 4.8L V8 2007-10

Porsche 958-1 Cayenne S 4.8L V8 2011-14
Porsche 958-1 Cayenne GTS 4.8L V8 2011-14
Porsche 958-1 Cayenne Turbo 4.8L V8 2011-14
Porsche 958-1 Cayenne Turbo S 4.8L V8 2011-14

Porsche 958-2 Cayenne S 3.6L V6 2015-18
Porsche 958-2 Cayenne GTS 3.6L V6 2015-18
Porsche 958-2 Cayenne Turbo 4.8L V8 2015-18
Porsche 958-2 Cayenne Turbo S 4.8L V8 2015-18

Porsche 970-1 Panamera 3.6L V6 2010-13
Porsche 970-1 Panamera 4 3.6L V6 2010-13
Porsche 970-1 Panamera S 4.8L V8 2010-13
Porsche 970-1 Panamera 4S 4.8L V8 2010-13
Porsche 970-1 Panamera GTS 4.8L V8 2013
Porsche 970-1 Panamera Turbo 4.8L V8 2010-13
Porsche 970-1 Panamera Turbo S 4.8L V8 2010-13

Porsche 970-2 Panamera 3.6L V6 2014-16
Porsche 970-2 Panamera 4 3.6L V6 2014-16
Porsche 970-2 Panamera S 3.0L V6 2014-16
Porsche 970-2 Panamera 4S 3.0L V6 2014-16
Porsche 970-2 Panamera GTS 4.8L V8 2014-16
Porsche 970-2 Panamera Turbo 4.8L 2014-16
Porsche 970-2 Panamera Turbo S 4.8L 2014-16

Porsche 95B-1 Macan S 3.0L V6 2014-18
Porsche 95B-1 Macan GTS 3.0L V6 2014-18
Porsche 95B-1 Macan Turbo 3.6L V6 2014-18

Diagram ref. 5.

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

0PB105249

99911347640

99911349040

99911349041

94810121202

99710121200

99710121201

0PB105249

The product you are viewing cross references to these numbers

3 3 3

Vent line from valve cover to crankcase. Porsche 955 Cayenne Turbo

94810721552/1

Product Information

Vent line from valve cover to crankcase
Vent line from the valve cover to the crankcase by OE Match for the Porsche 955 Cayenne Turbo 4.5L from 2003–06. This replacement line forms part of the M48.50 engine crankcase ventilation system.

Fits:
Porsche 955 Cayenne Turbo 4.5L 2003 - 2006

Diagram ref no 12

What This Product Does

The vent line provides a route between the valve cover and crankcase, allowing crankcase gases to move through the engine ventilation system. Correct ventilation helps manage crankcase pressure and limits the escape of oil mist around damaged or poorly sealed connections.

Functions

Routes crankcase gases through the ventilation system
Connects the valve cover and crankcase ventilation circuit
Helps maintain controlled crankcase pressure
Supports the management of oil vapour within the breather system

Technical Details

Brand: OE Match
Part type: valve cover-to-crankcase vent line
OE reference: 94810721552
Engine application: M48.50 4.5L V8
Assembly: valve cover and engine cover
Diagram ref no 12

Symptoms of Fault

Cracks or brittleness in the existing vent line
Oil mist or seepage around the hose connections
Whistling or unusual noises from the crankcase area
Rough or unstable idle caused by an air leak
Increased oil consumption or smoke
Abnormal crankcase vacuum

Why Replacement Matters

Age, engine heat and repeated pressure cycles can cause a breather line to harden, split or lose its seal. Replacing a damaged line helps restore the intended ventilation route and reduces the risk of vacuum leaks, oil residue and unstable crankcase pressure. Inspect adjoining seals, fittings and breather components during installation, as deterioration elsewhere in the system can produce similar symptoms.

OE Reference

94810721552

FAQs

Does smoke always indicate a failed vent line? No. Smoke can also be associated with the oil separator, an incorrect oil level or internal engine faults, so diagnosis is recommended.
Should connected components be inspected? Yes. Check the breather connections, seals and nearby hoses for cracks, oil contamination or poor sealing.
Is this a Genuine Porsche component? This listing is for an OE Match replacement. The supplied OE reference should be used to confirm the required application.
Which engine is this line associated with? The supplied diagram identifies it for the M48.50 engine used in the listed 955 Cayenne Turbo application.

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

94810721552

94810721552

The product you are viewing cross references to these numbers

4 4 4 4

Rear Main Seal - Crankshaft Oil Seal (85x105x11) - for Porsche 986 / 987 / 981 / 718 / 996 / 997 / 991 / 992 / 955 / 958 / 970 / 95B-1

0PB105249

Product Information

99911347640

99911349040

99911349041

94810121202

99710121200

99710121201

0PB105249

The product you are viewing cross references to these numbers

Enter your VAT number here and click Verify:

Knock Sensor. Porsche 95B Macan 2.0L Petrol 2014-18 › 95890537700