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Oil Pressure Senders / Switches

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DISPLAYING 1 to 8 (of 8 products)
Special Order item
91160613500
Product Information
Product Information
Oil pressure sender.

porsche

Fits:
Porsche 911 1984-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 43.

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91160613500
91160613500

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91160613500/1
Product Information
Product Information
Oil pressure sender.

oematch

Fits:
Porsche 911 1984-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 43.

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91160613500
91160613500

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Special Order item
93060611800
Product Information
Product Information
Oil pressure switch.
Sits on crankcase and on front radiator.

porsche

Fits:
Porsche 911 1984-89 (not Turbo)
Porsche 944 1985-88

Click 'zoom in' for large parts diagram (crankcase).
Diagram Ref No 37.

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Related, superseded, cross reference or alternative numbers for comparison.

93060611800
93060611800

The product you are viewing cross references to these numbers
93060611800/1
Product Information
Product Information
Oil pressure switch.
Sits on crankcase and on front radiator.

Fits:
Porsche 911 1984-89 (not Turbo)
Porsche 944 1985-88

Click 'zoom in' for large parts diagram (crankcase).
Diagram Ref No 37.

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Related, superseded, cross reference or alternative numbers for comparison.

93060611800
93060611800

The product you are viewing cross references to these numbers
Special Order item
91160623001
Product Information
Product Information
Oil pressure switch. Sits on the crankcase.

porsche

Fits:
Porsche 911 1969-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 45

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Related, superseded, cross reference or alternative numbers for comparison.

91160623001
91160623000
91161357100
91161357101
91160623001

The product you are viewing cross references to these numbers
91160623001/1
Product Information
Product Information
Oil pressure switch. Sits on the crankcase.

Fits:
Porsche 911 1969-89

Diagram ref no 45

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Related, superseded, cross reference or alternative numbers for comparison.

91160623001
91160623000
91161357100
91161357101
91160623001

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99970731440/1
Product Information
Product Information
Oil Thermostat O-Ring on Engine Case - 39.2 x 3mm
OE Match oil thermostat O-ring on engine case, 39.2 x 3mm, for Porsche 911, 914-6, 964, and 993 models. This replacement sealing O-ring helps prevent oil leaks at the engine-mounted thermostat area and supports correct engine oil system sealing.

Fits:
Porsche 911 - 1970 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1997
Porsche 914-6 - 1970 to 1976

Diagram ref no 34

The O-ring seals the joint between the oil thermostat and engine case. A correctly fitted seal helps prevent oil seepage, maintain oil system integrity, and keep the engine area clean and leak-free.

Functions
Replaces the oil thermostat O-ring
  Seals the thermostat connection on the engine case
  Helps prevent engine oil leaks
  Supports correct oil system sealing
  Suitable for oil thermostat, engine case, or oil leak repair
  Replaces hardened, flattened, cracked, swollen, or damaged O-rings
  OE Match replacement for Porsche engine oil system service.

Why Replace This Part?
Oil thermostat O-rings can harden, flatten, crack, swell, or lose sealing ability due to heat, age, oil exposure, and pressure cycles. A worn or damaged O-ring may allow oil seepage around the thermostat area, causing oil residue, low oil level concerns, engine bay contamination, or failed inspection. Replacement is recommended whenever the thermostat is removed or oil leakage is present.

When to Replace This Part
  Oil is leaking around the engine-mounted thermostat area
  The oil thermostat has been removed or serviced
  The O-ring is hard, flattened, cracked, swollen, or damaged
  Engine case sealing work is being carried out
  Oil seepage or oil residue is visible around the thermostat connection
  Preventative replacement is required during engine service

Where it fits on the car
This O-ring fits at the oil thermostat connection on the engine case. It forms part of the engine oil sealing system on Porsche 911, 914, 964, and 993 models.

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

99970731440
99970731440
99970717240
99970105340
99970105350

The product you are viewing cross references to these numbers
Special Order item
90110117503
Product Information
Product Information
Reducing piece oil pressure switch. 

porsche

Fits:
Porsche 911 T / T-V - 1969 to 1971
Porsche 911 1974 to 1977
Porsche 911 SC - 1978 to 1983
Porsche 911 3.2 Carrera - 1984 to 1989
Porsche 914-6 - 1970 to 1976

Click 'Zoom in' for large parts diagram.
Diagram ref no 42



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90110117503
90110117501
90110117503

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DISPLAYING 1 to 8 (of 8 products)
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About Oil Pressure Senders / Switches

Engine Oil Pressure Switches & Senders – Precision Monitoring for Porsche Engines

The engine oil pressure switch or sender unit is a vital component of your Porsche’s lubrication system. Its primary role is to monitor oil pressure and send signals to your dashboard, ensuring the engine always maintains sufficient lubrication. A properly functioning oil pressure sender safeguards against engine wear, overheating, and performance loss.

At Design911, we supply a full range of oil pressure switches and sender units for classic and modern Porsche models. Built from high-quality, heat-resistant materials, these components are designed for durability, accuracy, and consistent performance under demanding driving conditions.

Whether you’re restoring a classic 911, maintaining a Cayenne, or servicing a Cayman, our oil pressure senders and switches provide dependable pressure monitoring and peace of mind every time you drive.

What Do Oil Pressure Switches & Senders Do?

Oil pressure switches and senders work together to ensure your engine has the correct oil pressure for proper lubrication.

Core Functions:

  • Monitor oil pressure in the engine’s lubrication system.
  • Transmit readings or alerts to the vehicle’s dashboard gauge or warning light.
  • Protect engine components by warning of low oil pressure.
  • Ensure stable oil circulation during all driving conditions.

Accurate oil pressure monitoring prevents engine damage and maintains optimal performance, making these parts essential to Porsche reliability.

Why Do Oil Pressure Switches & Senders Fail?

Over time, exposure to heat, vibration, and oil contamination can cause pressure switches and sensors to deteriorate or malfunction.

Common Causes of Failure Include:

  • Oil contamination clogging internal diaphragms or ports.
  • Electrical corrosion or connector failure.
  • Seal degradation, leading to oil leaks.
  • Wear and tear from repeated heat cycles.
  • Faulty readings due to sensor fatigue or wiring damage.

Symptoms of a failing sender include flickering oil pressure lights, inaccurate gauge readings, oil leaks, or false low-pressure warnings, all of which can compromise performance or lead to unnecessary engine risk.

Why Replace Components?

A reliable oil pressure reading is crucial for the health of your Porsche engine. Replacing worn switches or senders with precision-engineered, high-quality components ensures dependable performance, accurate readings, and long-term protection.

Key Benefits:

  • Restores accurate oil pressure readings.
  • Prevents false dashboard warnings.
  • Protects against engine wear and overheating.
  • Constructed from heat- and corrosion-resistant materials.
  • Direct-fit design for easy installation and compatibility.
  • Ideal for performance maintenance, rebuilds, or upgrades.

By replacing a faulty sender or switch, you’ll preserve accurate oil pressure data and maintain the performance and longevity of your Porsche engine.

Highlights:
Precision-engineered Porsche oil pressure senders and switches.
Reliable oil monitoring for consistent engine protection.
Heat- and corrosion-resistant materials for long life.
Direct-fit compatibility for Porsche 911, Cayman, Boxster & Panamera.
Prevents false warnings and ensures accurate oil pressure readings.
Perfect for preventive maintenance or complete engine rebuilds.

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