HomeBelts and Cooling > SwitchesFour Seasons 36511 Engine Cooling Fan Switch
Part #: 36511

Four Seasons 36511 Engine Cooling Fan Switch

Temperature Switch
⚙️ 68 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Temperature Switch
🚗Fitment: Acura and BMW, TL, 325i, 325is, 535i, 318i, 325iX, M3, 635CSi, 325, 528e, 535is, 325e, 325es, 524td, 735i, 633CSi, 733i, and 320i
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Reliable Engine Cooling Fan Switch for Acura and BMW Models

The Four Seasons Temperature Switch 36511 is engineered to maintain optimal engine temperature by controlling the cooling fan operation. Designed for select Acura and BMW vehicles, this engine cooling fan switch ensures precise temperature regulation to protect your engine from overheating.

  • Connector Color: Black with open male connector
  • Terminal Quantity: 2 for secure electrical connection
  • Fitting Thread Size: M14 x 1.50 with male fitting gender
  • Temperature On: 203°F, Temperature Off: 194°F for accurate fan control
  • Engine mounted switch designed to meet or exceed OEM specifications

About the Four Seasons Temperature Switch Product Line

The Temperature Switch line by Four Seasons focuses on delivering reliable temperature-activated components for engine cooling systems. The 36511 switch is part of this line, providing precise fan activation and deactivation based on engine temperature. This ensures efficient cooling fan operation, helping maintain engine performance and longevity.

Detailed Product Description

This engine cooling fan switch features a black open male connector with two terminals, designed for easy integration into the vehicle’s cooling system. The switch mounts directly on the engine and uses a male fitting with an M14 x 1.50 thread size for secure installation. It activates the cooling fan at 203°F and turns it off at 194°F, maintaining optimal engine temperature. The Four Seasons 36511 switch meets or exceeds OEM standards, making it a dependable replacement for compatible Acura and BMW models.

Compatible Vehicles and Common Applications

  • Acura TL
  • BMW 318i, 318is, 320i, 325e, 325es, 325i, 325is, 325iX, 524td, 528e, 535i, 535is, 635CSi, 735i, M3

This switch is commonly used to address issues such as:

  • Cooling fan not activating at the correct temperature
  • Engine overheating due to fan failure
  • Intermittent fan operation causing temperature fluctuations
  • Faulty temperature switch causing electrical connection problems
  • Replacement of worn or damaged OEM cooling fan switches

Installation Notes and Tips

Ensure the engine is cool before installation to avoid burns. Disconnect the battery to prevent electrical shorts. Remove the old switch carefully, noting the connector type and thread size. Install the Four Seasons 36511 switch by threading it into the engine mount location and reconnect the two-terminal open male connector. Verify proper fan operation by monitoring engine temperature after installation.

Quality Assurance and Warranty

The Four Seasons Temperature Switch 36511 is manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. This part undergoes rigorous quality control to maintain consistent operation in demanding engine environments. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandFour Seasons
Part Number36511
PositionTemperature Switch
Connector ColorBlack
Connector GenderMale
Connector ShapeOpen
DescriptionSwitch-Temp /Engine Mount
Fan Open/ClosedOpen
Fitting GenderMale
Fitting Thread SizeM14 x 1.50
Meets / Exceeds OEM?YES
Mnt Sys LocEngine Mounted
StyleTemperature
Temperature Off194
Temperature On203
Terminal Quantity2
TypeCooling Fan

This part fits 68 vehicles. Search below:

YearMakeModelPositionNotes
1995AcuraTLN/AEngine Coolant Temperature Sensor fits on radiator.; Temperature Switch
1994BMW325iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1994BMW325isN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1993BMW325iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1993BMW325isN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1993BMW535iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1992BMW325iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1992BMW325isN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1992BMW535iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1991BMW318iN/A2 Term.; 91 Deg. C; Temperature Switch
1991BMW318isN/A91 Deg. C; Temperature Switch
1991BMW325iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1991BMW325isN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1991BMW325iXN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1991BMW535iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1991BMWM3N/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1990BMW325iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1990BMW325isN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1990BMW325iXN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1990BMW535iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1990BMWM3N/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1989BMW325iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1989BMW325isN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1989BMW325iXN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1989BMW535iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1989BMW635CSiN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1989BMWM3N/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1988BMW325iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1988BMW325isN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1988BMW325iXN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1988BMW528eN/A91 Degree Celsius; Temperature Switch
1988BMW535iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1988BMW535isN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1988BMW635CSiN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1988BMWM3N/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1987BMW325eN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1987BMW325esN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1987BMW325iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1987BMW325isN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1987BMW528eN/A91 Degree Celsius; Temperature Switch
1987BMW535iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1987BMW635CSiN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1986BMW325eN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1986BMW325esN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1986BMW524tdN/A91 Degree Celsius; Temperature Switch
1986BMW528eN/A91 Degree Celsius; Temperature Switch
1986BMW535iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1986BMW635CSiN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1986BMW735iN/A91 Degree Celsius; Temperature Switch
1985BMW318iN/AEngine mounted coolant fan switch; Temperature Switch
1985BMW325eN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1985BMW524tdN/A91 Degree Celsius; Temperature Switch
1985BMW528eN/A91 Degree Celsius; Temperature Switch
1985BMW535iN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1985BMW635CSiN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1985BMW735iN/A91 Degree Celsius; Temperature Switch
1984BMW318iN/AEngine mounted coolant fan switch; Temperature Switch
1984BMW325eN/AEngine Mounted; w/ 2 Term. Switch; Temperature Switch
1984BMW528eN/A91 Degree Celsius; Temperature Switch
1983BMW320iN/AEngine mounted coolant fan switch; Temperature Switch
1983BMW528eN/A91 Degree Celsius; Temperature Switch
1982BMW320iN/AEngine mounted coolant fan switch; Temperature Switch
1982BMW528eN/A91 Degree Celsius; Temperature Switch
1981BMW320iN/AEngine mounted coolant fan switch; Temperature Switch
1980BMW320iN/AEngine mounted coolant fan switch; Temperature Switch
1979BMW320iN/AEngine mounted coolant fan switch; Temperature Switch
1978BMW320iN/AEngine mounted coolant fan switch; Temperature Switch
1977BMW320iN/AEngine mounted coolant fan switch; Temperature Switch

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

11120005111365111559361711385171249619189526207664211882212882365115023261311357073613113642726131136427380193588999675A77664AC8854CT0010HS882MT0604SW1802

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.