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Water / Coolant Radiators
2 pin. General for cars without aircon.

Fits:
Porsche 924S 1986-88
Porsche 944 1985-91 (not Turbo, not Air con)
Click 'Zoom in' for large parts diagram.
Diagram ref no 5.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94460648100
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 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
Twin integral oil coolers - One each tank

Fits
Porsche 928 4.5ltr - 1978 to 1982 - Automatic (M249)
Porsche 928 S 4.7ltr - 1981 to 1983 - Automatic (M249)
Porsche 928 S2 4.7ltr - 1984 to 1986 - Automatic (M249)
This all aluminium, high efficiency radiator is uprated by 30% over original item.
Fitment as per original with no modification necessary.
This radiator comes complete with integral oil cooler. This radiator comprises of twin oil coolers, 1 in each end tank with cowl brackets on each tank.
• The units are fully tig welded and pressure tested upon completion and come with the standard 12 month warranty (Road usage only).
• All of the 928 radiators are manufactured using upgraded 50mm aluminium cores.
• Oil cooler bosses on our 928 radiators are as per OEM for simple bolt on bolt off connection.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810604002
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
Three integral oil cooler options available
• Oil cooler in right hand tank (as you look at outlets)
• Oil cooler in left hand tank (as you look at outlets)
• No oil cooler in either tank

Fits
Porsche 928 4.5ltr - 1978 to 1982 - Manual
Porsche 928 S 4.7ltr - 1981 to 1983 - Manual
Porsche 928 S2 4.7ltr - 1984 to 1986 - Manual
This all aluminium, high efficiency radiator is uprated by 30% over original item.
Fitment as per original with no modification necessary.
This radiator comes complete with integral oil cooler (choose options available) with cowl brackets on each tank.
• The units are fully tig welded and pressure tested upon completion and come with the standard 12 month warranty (Road usage only).
• All of the 928 radiators are manufactured using upgraded 50mm aluminium cores.
• Oil cooler bosses on our 928 radiators are as per OEM for simple bolt on bolt off connection.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810604
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
Water Coolant Radiators – Efficient Cooling Performance for Porsche Engines
Water coolant radiators are the heart of your Porsche’s cooling system, responsible for maintaining the perfect balance between performance and engine temperature. These components dissipate heat from the coolant as it passes through the radiator core, ensuring your engine operates at peak efficiency while preventing overheating - whether you’re cruising through city streets or pushing hard on the track.
At Design911, we offer a comprehensive range of genuine and high-quality water coolant radiators for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, Panamera and transaxle cars. Each radiator is precision-engineered to provide efficient heat exchange, corrosion resistance, and a perfect fit, ensuring long-lasting performance and reliability for every driving condition.
What Do Water Coolant Radiators Do?
Radiators are essential to your Porsche’s engine cooling
system. Their primary functions include:
- Transferring
heat from the coolant to the surrounding air.
- Regulating
coolant temperature to prevent engine overheating.
- Supporting
overall thermal balance for performance and emissions efficiency.
- Enhancing reliability by maintaining optimal operating temperatures in all climates.
By efficiently dissipating heat, radiators protect your engine, prevent premature wear, and maintain consistent performance under pressure.
Why Do Radiators Fail?
Despite being built for endurance, radiators experience
constant thermal stress, exposure to pressure, and environmental elements that
can lead to failure. Common causes include:
- Corrosion
or rust due to contaminated or old coolant.
- Leaks
from cracked tanks, damaged cores, or failing seals.
- Blockages
caused by debris or scale build-up inside coolant passages.
- Physical
damage from road debris or stone impacts.
- Coolant contamination from oil or combustion residue.
Symptoms of radiator failure include overheating, coolant loss, visible leaks, or fluctuating temperature readings.
Why Replace a Faulty Radiator?
A damaged or inefficient radiator compromises your Porsche’s cooling system, risking overheating and potential engine damage. Replacing your radiator with a high-quality, manufacturer-standard unit ensures optimal cooling efficiency, reliability, and peace of mind.
Benefits of replacement include:
Restored
cooling efficiency and heat dissipation.
Prevention
of engine overheating and coolant loss.
Enhanced
vehicle performance and fuel economy.
Durable,
corrosion-resistant materials for long service life.
All radiators in our range are designed using premium aluminium cores, precision welds, and reinforced end tanks to ensure excellent cooling capacity, leak prevention, and long-term reliability — perfect for both standard and high-performance Porsche applications.