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G3,G4 Radiator Fan Temperature Switch

This 3 pin radiator fan switch is fitted into the radiator and controls when the electric cooling fan switches on and off. It reacts to coolant temperature as it passes through the radiator, closing the internal electrical contacts when the coolant reaches the switch-on temperature and opening them again once the temperature has dropped.

This switch has two operating stages, making it suitable for vehicles with multi-speed radiator fan systems. The first stage switches on at 95°C and off at 84°C. The second stage switches on at 102°C and off at 91°C. This helps the cooling system maintain the correct engine temperature, especially in traffic, hot weather or when the vehicle is under load.

A faulty radiator fan switch can cause the cooling fan not to operate, run at the wrong time, run continuously, or allow the engine to overheat. Supplied with a sealing washer, this switch is ready to fit into radiators using the M22 x 1.5 threaded fan switch port.

Specifications

  • Type: Radiator fan switch
  • Pins: 3 pin
  • Thread size: M22 x 1.5
  • Spanner size: 29mm
  • Switch-on points: 95°C / 102°C
  • Shut-off points: 84°C / 91°C
  • Supplied with sealing washer

Fitment

Watercooled VW

  • Corrado from chassis 50-R-000 001 onwards – all engines
  • Golf Mk3 from chassis 1H-R-000 001 onwards / 1993 onwards – all engines
  • Golf Mk4 / Bora all engines up to chassis 1J-X-800 000, 1998–1999
  • Golf Mk4 / Bora 1.6 AEH / AKL, 2000–2002, with air conditioning and automatic transmission
  • New Beetle 1998–2010, 1.6, 1.8, 1.9 diesel, 2.0, 2.3 and 3.2 petrol models
  • Caddy II 1995–2004, 1.4, 1.6 petrol, 1.7 and 1.9 diesel models
  • Lupo 1998–2005, 1.0, 1.2 diesel, 1.4, 1.6 petrol, 1.4 diesel and 1.7 diesel models
  • Passat B3/B4 1988–1997, selected petrol and diesel models
  • Polo 6N / Polo Classic / Polo Estate 1995–2002, selected petrol and diesel models
  • Sharan I 1995–2010, selected petrol, diesel and LPG models
  • Vento 1991–1998, selected petrol and diesel models

Important Notes

  • Please check your existing switch temperature rating and 3 pin plug before ordering.
  • Always fit with the supplied seal to prevent coolant leaks.

This Part Fits: Corrado, Mk3 Golf, Mk4 Golf, Mk3 Polo,

Availability: Special Order Item

Item Name: Temperature Switch, radiator fan

Description: Temperature Switch, radiator fan

Product Group: Electric

Group: Cooling System

Colour: Black

Unit of Measure: Each

Manufacturer: JP

Dimensions:

Width: 35mm

Height: 35mm

Depth: 60mm

Volume: 73500mm3

Weight: 0.065kg

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