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- Porsche 924 2.0L 1976-79
- Porsche 944 2.5L 8V 1982-87
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Fan temperature switch by OE Match. This version has a 2-pin electrical connection and controls cooling fan operation according to coolant temperature.
Fits
- Porsche 924 1976-85
- Porsche 944 1982-85
- Porsche 928 1978-86
Check fitment for your specific vehicle (model, year, engine) before ordering.
Diagram ref: 5
What This Product Does
The switch responds to coolant heat by changing the electrical state of the fan control circuit. This allows the cooling fan to operate when required, particularly while the vehicle is stationary or moving slowly and natural airflow through the radiator is limited.
Functions
- Provides temperature-dependent switching for the electric cooling fan.
- Controls fan activation as coolant temperature rises.
- Allows the fan circuit to change state as the coolant cools.
Technical Details
- Part reference: 823959481F.
- Brand: OE Match.
- Electrical connection: 2 pin.
Symptoms of Fault
- The fan remains inactive despite rising coolant temperature.
- Fan operation continues without the expected temperature-related shut-off.
- Coolant temperature increases during slow-moving traffic or while stationary.
- The fan starts inconsistently or activates later than expected.
These symptoms do not confirm switch failure on their own. Fan motors, relays, fuses, damaged wiring and poor terminal contact can produce similar behaviour.
Why Replacement Matters
A confirmed switch fault can interrupt temperature-dependent fan control. Replacing the defective component addresses the switching fault rather than leaving the fan permanently inactive or operating continuously. Check the surrounding electrical connections and cooling system at the same time, as a replacement switch will not resolve a separate motor, relay or coolant circulation problem.
FAQs
- Does an inactive fan always mean the switch has failed?
No. Diagnose the motor, electrical supply, fuse, relay and wiring before deciding which component needs replacement. - Why might the temperature rise mainly in traffic?
With less airflow from vehicle movement, radiator cooling depends more heavily on the electric fan. - Can trapped air affect diagnosis?
Yes. Air pockets can cause uneven coolant temperatures, so correct filling and bleeding are important when investigating cooling faults. - What should be checked before fitting?
Compare the original reference, connector and vehicle application. Follow the model-specific installation procedure and check for leaks and correct fan operation afterwards.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
823959481F
The product you are viewing cross references to these numbers
- 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 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
The OE Match Fan Temperature Switch, 2 Pin is a high-quality replacement cooling system component designed to activate the radiator cooling fan when coolant temperatures reach a predetermined level. Mounted within the cooling system, this switch monitors coolant temperature and automatically signals the electric cooling fan to operate when additional cooling is required.
Fits:
- 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 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Diagram Ref No 5
Manufactured to OE specifications for fit, function and reliability, this 2-pin temperature switch helps maintain correct engine operating temperatures, protects against overheating and ensures efficient cooling system performance. It is an essential replacement item for maintaining the reliability of the vehicle's cooling system.
What This Product Does:
- Monitors coolant temperature within the cooling system.
- Activates the electric radiator cooling fan when required.
- Helps maintain optimum engine operating temperature.
- Prevents excessive heat build-up during low-speed driving or idling.
- Supports efficient cooling system operation.
- Protects the engine from overheating-related damage.
Symptoms Of Wear Or Failure:
- Cooling fan fails to operate when the engine reaches operating temperature.
- Engine temperature rises higher than normal.
- Engine overheating during traffic or idle conditions.
- Cooling fan runs continuously regardless of temperature.
- Inconsistent cooling fan operation.
- Temperature warning light activation.
- Reduced cooling system efficiency.
- Overheating during warm weather or heavy traffic conditions.
Why Replacement Matters:
- The fan temperature switch plays a critical role in controlling cooling fan operation and maintaining stable engine temperatures. Over time, repeated heat cycles, age and electrical wear can affect the switch's ability to accurately detect coolant temperature and activate the fan.
- A failed switch can prevent the cooling fan from operating when needed, significantly increasing the risk of overheating. Excessive engine temperatures can damage gaskets, seals, cooling system components and, in severe cases, major engine components.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94460648100
The product you are viewing cross references to these numbers
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
Radiator Fan Mounting Rubber Buffer – Blower Grille Mount
Sold each - 2 required per car
High-quality rubber-metal mounting buffer designed for securing the radiator fan blower guard grille on Porsche 928 and 928S models (1980–1986).
This component acts as a vibration-damping mounting point,
ensuring the blower guard grille and associated fan assembly are securely
positioned while reducing vibration and noise within the cooling system.
Fits:
- Porsche 928 4.5L 1980-82
- Porsche 928S 4.7L 1981-83
Diagram ref no 6
Constructed using a durable rubber-metal bonded design, this mounting buffer is engineered to withstand engine bay temperatures, mechanical stress, and long-term use while maintaining flexibility and structural integrity.
A direct replacement part, this radiator fan mounting buffer is essential for maintaining proper cooling system stability and preventing unwanted movement or wear.
Reference Number: 99970331000
Key Features
• Direct replacement rubber-metal mounting buffer
• Suitable for Porsche 928 and 928S (1980–1986)
• Designed for radiator fan blower guard grille mounting
• Reduces vibration and noise within the cooling system
• Durable rubber-metal bonded construction
• OEM-style fit and function
Function and Purpose
This mounting buffer provides secure attachment and vibration isolation for the radiator fan assembly components.
It helps to:
• Stabilise the blower guard grille and fan assembly
• Reduce vibration transfer within the cooling system
• Minimise noise caused by component movement
• Protect surrounding components from wear and stress
Why Replace Your Radiator Fan Mounting Buffer
Over time, rubber-metal mounts can degrade due to heat and vibration.
Common issues include:
• Cracked or hardened rubber
• Reduced vibration damping performance
• Loose or unstable fan assembly components
• Increased noise or movement in the cooling system
Replacing the buffer restores proper mounting stability and cooling system performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970331000
The product you are viewing cross references to these numbers