Four Seasons
Temperature Switch

Four Seasons 20030 Engine Cooling Fan Switch

Brand Four Seasons 20030
Connector Shape Rectangular
Terminal Quantity 2
Connector Gender Female
Description Switch-temp /engine mount
Fan Open/Closed Open
Fitting Gender Male
Fitting Thread Size M16-1.50
Meets / Exceeds OEM? Yes
Mnt Sys Loc Engine mounted
Style Temperature
Temperature Off 185
Temperature On 203
Type Cooling fan
Product line Temperature Switch
Fits Chevrolet, Geo, Pontiac, and Suzuki · 14 vehicles

OE direct replacement. Meets or exceeds OEM requirements for dependable cooling fan control.

Temperature switch. Opens at 185 and closes at 203 for precise fan operation.

Engine-mounted design. Rectangular female connector with 2 terminals and M16-1.50 threads.

Cross-references Baldwin 20030, 50843 and 207979 for the same application. See all 23.

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Free returns within 60 days if it doesn't fit when fitment is verified.

Engine Cooling Fan Switch Overview

The Four Seasons Temperature Switch 20030 is an engine-mounted cooling fan switch built for direct temperature control of the radiator fan circuit. It uses a rectangular female connector with 2 terminals and an M16-1.50 male thread for a straightforward OE-style replacement on select Suzuki, Chevrolet, Geo, and Pontiac applications.

With an open fan state and calibrated switch points at 185°F off and 203°F on, this Four Seasons Temperature Switch helps manage fan operation based on coolant temperature. It is a practical replacement for vehicles such as the Suzuki Swift, Chevrolet Sprint, Geo Metro, and Pontiac Firefly.

Key Features

  • Brand: Four Seasons Temperature Switch
  • Part number: 20030
  • Engine-mounted cooling fan switch design
  • Rectangular female connector with 2 terminals
  • M16-1.50 male thread fitting
  • Fan open/closed calibration: open
  • Temperature off at 185°F and on at 203°F
  • Meets or exceeds OEM requirements

Product Details

Four Seasons 20030 is a temperature-based engine cooling fan switch that threads into the engine-mounted location and signals fan operation at the specified coolant temperature range. The Four Seasons Temperature Switch line focuses on direct-fit thermal control components for cooling system service, and this part is built to match the electrical and mechanical requirements of the original application. This part cross-references Baldwin 20030 for the same application.

Compatible With 1992-1994 Suzuki Swift, engine mounted coolant fan switch; 1989-1990 Suzuki Swift, engine mounted coolant fan switch; 1989-1991 Chevrolet Sprint, engine mounted coolant fan switch; 1990-1991 Geo Metro, engine mounted coolant fan switch; 1989-1991 Pontiac Firefly; and 1991 Suzuki Swift. It is also a fitment match for the 1990-1991 Geo Metro mounted in the throttle body per the listed application notes.

Common Problems This Part Can Address

  • Cooling fan not switching on at the correct engine temperature
  • Cooling fan staying on longer than expected after warm-up
  • Intermittent fan operation caused by a worn temperature switch
  • Temperature-related cooling system control issues on engine-mounted applications
  • Electrical connection problems at the fan switch due to connector wear or mismatch

Installation Notes

Verify the connector shape, terminal count, thread size, and mounting location before installation. This switch uses a rectangular female connector, 2 terminals, and an M16-1.50 fitting, so matching the original sensor style is important for proper fitment. Confirm the vehicle application and engine-mounted location on the Suzuki Swift, Chevrolet Sprint, Geo Metro, or Pontiac Firefly before replacing the original unit.

Quality Assurance

Four Seasons lists this part as meeting or exceeding OEM requirements, making it an OE-style replacement for temperature-controlled cooling fan service. Part number 20030 is built for the specified thermal switching range and application fitment.

This part fits 14 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionPositionNotes
1994SuzukiSwiftAutomaticN/AEngine mounted coolant fan switch; Temperature Switch
1993SuzukiSwiftAutomaticN/AEngine mounted coolant fan switch; Temperature Switch
1992SuzukiSwiftAutomaticN/AEngine mounted coolant fan switch; Temperature Switch
1991ChevroletSprint—N/AEngine mounted coolant fan switch; Temperature Switch
1991GeoMetro—N/AEngine Mounted; Mounted In Throtte Body; Temperature Switch
1991PontiacFirefly—N/ATemperature Switch
1991SuzukiSwift—N/ATemperature Switch
1990ChevroletSprint—N/AEngine mounted coolant fan switch; Temperature Switch
1990GeoMetro—N/AEngine Mounted; Mounted In Throtte Body; Temperature Switch
1990PontiacFirefly—N/ATemperature Switch
1990SuzukiSwift—N/AEngine mounted coolant fan switch; Temperature Switch
1989ChevroletSprint—N/AEngine mounted coolant fan switch; Temperature Switch
1989PontiacFirefly—N/ATemperature Switch
1989SuzukiSwiftManualN/AEngine mounted coolant fan switch; Temperature Switch
Directly replaces or cross-references 23 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Baldwin — 200305084320797921183815510011768060B001768060B101768070B001768070B1011120030191881449606014396065483960656611760070810176007081117600708211768070821A87979AC8830HS838SW1425SW1887