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- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Oil Pressure Sender Unit
The Oil Pressure Sender Unit is a critical engine monitoring
component fitted to the Porsche 911 SC from 1978 to 1983. Designed to
continuously monitor engine oil pressure and transmit accurate readings to the
dashboard gauge, this sender unit allows drivers to keep track of one of the
most important indicators of engine health.
Fits:
- Porsche 911 1978-1983 3.0L / SC
Diagram ref no 45
On air-cooled Porsche engines, maintaining correct oil pressure is essential for lubrication, cooling, and long-term engine protection. The oil pressure sender unit converts oil pressure into an electrical signal that is displayed on the instrument cluster, providing real-time feedback on the condition of the lubrication system.
A faulty sender unit can result in inaccurate readings, fluctuating gauge behaviour, or complete loss of oil pressure indication, making replacement an important part of preventative maintenance and engine reliability.
What Does the Oil Pressure Sender Unit Do?
The oil pressure sender measures the pressure generated within the engine's lubrication system and sends a corresponding electrical signal to the oil pressure gauge.
This enables the driver to:
- Monitor engine oil pressure in real time
- Identify lubrication issues before serious damage occurs
- Detect low oil pressure conditions
- Verify correct oil circulation throughout the engine
- Monitor engine health during normal driving and performance use
Because the Porsche 911 SC uses an air-cooled engine with a sophisticated dry-sump lubrication system, accurate oil pressure readings are particularly important for protecting valuable engine components.
Why Does the Oil Pressure Sender Unit Fail?
Oil pressure sender units operate in a harsh environment exposed to heat, vibration, oil contamination, and age-related deterioration.
Common causes of failure include:
- Internal electrical wear
- Diaphragm deterioration
- Oil contamination inside the sender
- Corrosion of electrical terminals
- Heat-related degradation
- Vibration damage Internal sealing failure causing oil leaks
- Age-related sensor inaccuracy
As the sender ages, readings may become erratic, inaccurate, or completely non-functional.
Common Symptoms of a Faulty Oil Pressure Sender
A failing oil pressure sender unit may cause:
- Oil pressure gauge fluctuating unexpectedly
- Incorrect oil pressure readings
- Gauge reading permanently high or low
- Intermittent gauge operation
- No oil pressure indication at all
- Oil leakage from the sender body
- Dashboard oil pressure concerns despite normal engine operation
In many cases, the sender unit itself is the source of the problem rather than the engine's oil pressure system.
When Should You Replace It?
Replacement is recommended when:
- Oil pressure readings become unreliable
- The gauge behaves erratically
- The sender develops an oil leak
- During engine restoration work
- When replacing ageing engine sensors
- As part of preventative maintenance on high-mileage vehicles
- During diagnosis of oil pressure-related dashboard faults
Replacing a faulty sender restores confidence in your oil pressure monitoring system and helps ensure that genuine lubrication issues can be identified quickly.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91160611103
The product you are viewing cross references to these numbers
- 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 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 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
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- 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 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
Fits:
Porsche 964 1989-94
Porsche 993 1994-98
Porsche 928 1978-91
Porsche 924S 1986-88
Porsche 968 1992-95
Porsche 944 1982-91
Click 'Zoom in' for large parts diagram.
Diagram ref no 40.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92860620304
The product you are viewing cross references to these numbers
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Fits:
Porsche 928 1978-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 60
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810717407
The product you are viewing cross references to these numbers
- 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 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 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
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- 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 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
This OE Match oil pressure sender is a direct replacement for Porsche part number 92860620304, manufactured to original specifications for accurate readings and reliable performance. It is installed in the engine oil system, typically mounted on or near the engine block or oil housing.
Fits:
Porsche 964 1989 - 1994
Porsche 993 1994 - 1998
Porsche 928 1978 - 1991
Porsche 924S 1986 - 1988
Porsche 968 1992 - 1995
Porsche 944 1982 - 1991
Diagram ref no 40.
The sender measures oil pressure and converts it into an electrical signal that is displayed on the dashboard gauge. This allows the driver to monitor engine lubrication in real time - critical for engine health.
This part replaces several earlier versions including 92860620301, 92860620302, and 94460620301.
The oil pressure sender continuously monitors engine oil pressure and relays this information to the vehicle’s instrument cluster. This ensures the driver is alerted to any abnormal pressure conditions that could indicate lubrication issues.
Accurate oil pressure monitoring is essential to prevent engine damage caused by insufficient lubrication.
Function
• Measures engine oil pressure
• Sends signal to dashboard gauge or warning light
• Helps monitor engine lubrication in real time
• Alerts driver to potential oil system issues
Over time, oil pressure senders can fail due to internal wear, contamination, or electrical faults. A faulty sender may give incorrect readings or trigger warning lights unnecessarily.
Replacing a worn or failing sender ensures accurate oil pressure monitoring, helping to protect the engine from potential damage caused by low lubrication.
When to replace
• Incorrect or fluctuating oil pressure readings
• Oil pressure warning light activation
• Oil leaks from sender unit
• Electrical faults or intermittent gauge readings
• During engine maintenance or restoration
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92860620304
The product you are viewing cross references to these numbers