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Oil Thermostat

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0210002
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High clearance oil line x-over to thermostat, 30mm.

elephantracing

Fits:
Porsche 911 1965-71

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0210002
0210002
91110772910

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0210001
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Oil tank to thermostat pipe. High Clearance Specialty Type.

elephantracing

Fits:
Porsche 911 1965-71

Specialty pipe interchanges with 3A and connects 65-71 oil tank (26mm fitting) to thermostat. Provides maximum clearance for fitting wide tires. Unlike the factory line that passes between the tire and the inner wheel well, this line arches above the tire to give superior tire clearance. The critical area between tank and tire is a purpose-formed hard line for maximum clearance. Cars 65-71 are highly recommended to use this line for improved tire clearance.

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0210001
0210001
91110773011

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90164163200
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Oil temperature sensor. on crankcase.

Fits:

Porsche 911 /912 1969-76
Porsche 911 SC SPM 1978-83
Porsche 911 Turbo 3.0L 1975-77

Diagram Ref No 28

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90164163200
90164163200
90164163201

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90110775100
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Oil thermostat.

porsche

Fits:
Porsche 911 1965-71

Click 'Zoom in' for large parts diagram.
Diagram ref no 57

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90110775100
90110775100

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90110780101/1
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Oil thermostat. 

Fits:
Porsche 911S - 1969 to 1971


Diagram ref no 12



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90110780101
90110780101
90110780100

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DISPLAYING 1 to 5 (of 5 products)
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About Oil Thermostat

Oil Thermostats – Precision Temperature Regulation for Porsche Engines

The oil thermostat plays a vital role in your Porsche’s lubrication and cooling system by controlling oil flow based on temperature. It ensures that your engine oil warms up quickly to the ideal operating temperature and maintains stability during demanding driving conditions. This optimised oil temperature improves performance, efficiency, and long-term engine protection.

At Design911, we supply a range of oil thermostats and related components designed for reliability and accuracy across both classic and modern Porsche models. Manufactured using high-quality heat-resistant alloys and durable seals, our thermostats guarantee smooth operation, consistent flow control, and a perfect fit for your Porsche’s lubrication system.

Whether you’re maintaining a 911, Cayman, or Panamera, our oil thermostats deliver the precise temperature regulation your engine demands for both everyday use and performance driving.

What Do Oil Thermostats Do?

An oil thermostat regulates when oil is diverted through the oil cooler, based on temperature readings.

Core Functions:

  • Control oil flow between the engine and the oil cooler.
  • Ensure rapid oil warm-up to reduce cold-start wear.
  • Maintain stable operating temperatures during all conditions.
  • Protect against overheating under high loads.
  • Support optimal lubrication and efficiency.

By keeping oil within the correct temperature range, the thermostat helps your Porsche achieve consistent performance, better fuel economy, and extended engine life.

Why Do Oil Thermostats Fail?

Over time, continuous exposure to high temperatures, oil contamination, and mechanical wear can cause oil thermostats to degrade or malfunction.

Common Causes of Failure Include:

  • Sticking or seized valves due to sludge or varnish build-up.
  • Thermal fatigue from repeated heating and cooling cycles.
  • Cracked housings or worn seals, leading to leaks.
  • Oil contamination affecting thermal response.
  • Improper temperature regulation, causing overheating or slow warm-up.

Signs of a failing thermostat include oil temperature fluctuations, overheating, or delayed oil circulation, which can result in reduced engine protection and performance.

Why Replace Oil Thermostat Components?

A faulty thermostat can cause erratic oil flow, engine wear, or overheating. Replacing it with a high-quality, precision-engineered unit ensures reliable temperature control, smoother oil circulation, and consistent lubrication.

Key Benefits:

  • Restores accurate oil temperature regulation.
  • Prevents overheating and cold-start damage.
  • Improves oil flow and engine efficiency.
  • Built from heat- and corrosion-resistant materials.
  • Direct-fit compatibility with a wide range of Porsche models.
  • Ideal for servicing, engine rebuilds, or performance upgrades.

Replacing an ageing thermostat is an essential part of maintaining your Porsche’s lubrication system and preventing premature engine wear.

Highlights:

  • Precision-engineered Porsche oil thermostats for reliable control.
  • Ensures optimal oil flow and temperature regulation.
  • Constructed from premium heat-resistant materials.
  • Direct-fit design for 911, Cayman, Boxster, Panamera and more.
  • Ideal for routine maintenance or high-performance applications.
  • Maintains peak engine performance and longevity.

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