Auxiliary air regulator Genuine Porsche part 911606102CX

Code: 911606102CX

Genuine Porsche part

Auxiliary air regulator

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Oil pressure sender. Porsche 911 1978-83

91160611103/1

Product Information

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
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91160611103

91160611103

91160611101

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