HomeBelts and Cooling > SwitchesFour Seasons 35944 Engine Cooling Fan Switch
Part #: 35944

Four Seasons 35944 Engine Cooling Fan Switch

Temperature Switch
⚙️ 47 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Temperature Switch
🚗Fitment: Toyota, Geo, Chevrolet, and BMW, Corolla, Prizm, Celica, Nova, Camry, 325es, Supra, Tercel, and Monza
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Reliable Engine Cooling Fan Switch for BMW, Chevrolet, Geo, and Toyota

The Four Seasons 35944 Engine Cooling Fan Switch is designed to maintain optimal engine temperature by controlling the cooling fan operation. Compatible with popular models like the BMW 325i, Chevrolet Nova, and Toyota Camry, this temperature switch ensures precise fan activation at 212°F to protect your engine from overheating.

  • Connector color: White with a round shape for secure connection
  • Single terminal male connector for straightforward installation
  • Engine-mounted fitting with M16-1.50 male thread size
  • Fan switch operates in a closed position to activate cooling fan
  • Meets or exceeds OEM specifications for reliable performance

About the Four Seasons Temperature Switch Product Line

The Four Seasons Temperature Switch line focuses on precision-engineered components that regulate engine cooling fan operation based on temperature thresholds. The 35944 switch is part of this line, offering dependable temperature sensing and fan control to maintain engine efficiency and prevent overheating in vehicles such as the BMW 325is and Toyota Supra.

Detailed Product Description

This engine cooling fan switch features a white, round male connector with a single terminal, designed for easy integration into the engine cooling system. The switch is engine-mounted and uses a male fitting with an M16-1.50 thread size, ensuring a secure and leak-free installation. It activates the cooling fan at 212°F, operating in a closed circuit to engage the fan when needed. The Four Seasons 35944 switch meets or exceeds OEM standards, making it a reliable replacement for factory-installed components in models like the Geo Prizm and Chevrolet Monza.

Common Applications and Issues Addressed

  • Prevents engine overheating by activating the cooling fan at the correct temperature
  • Resolves intermittent or non-functioning cooling fan problems
  • Eliminates engine temperature fluctuations caused by faulty fan switches
  • Restores proper cooling system operation in BMW 325e and Toyota Tercel vehicles
  • Ensures consistent fan control for improved engine performance and longevity

Installation Notes and Tips

When installing the Four Seasons 35944 Engine Cooling Fan Switch, ensure the engine is cool to avoid burns. Verify the M16-1.50 thread size matches your vehicle’s mounting point. Connect the white, round male connector securely to prevent electrical issues. It is recommended to inspect the cooling fan and related wiring during installation to ensure overall system integrity.

Quality Assurance and Warranty

Four Seasons parts, including the 35944 Engine Cooling Fan Switch, are manufactured to meet or exceed OEM specifications. This part undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details may vary, Four Seasons typically offers coverage against defects in materials and workmanship, providing confidence in your replacement part.

BrandFour Seasons
Part Number35944
PositionTemperature Switch
Connector ColorWhite
Connector GenderMale
Connector ShapeRound
DescriptionSwitch-Temp /Engine Mount
Fan Open/ClosedClosed
Fitting GenderMale
Fitting Thread SizeM16-1.50
Meets / Exceeds OEM?YES
Mnt Sys LocEngine Mounted
StyleTemperature
Temperature On212
Terminal Quantity1
TypeCooling Fan

This part fits 47 vehicles. Search below:

YearMakeModelSubmodelBody TypeDrive TypeLitersCylindersFuel TypePositionNotes
1993ToyotaCorollaN/ATemperature Switch
1992GeoPrizmN/AEngine mounted coolant fan switch; Temperature Switch
1992ToyotaCelica1.6LL4N/ATemperature Switch
1992ToyotaCorollaFWDN/ATemperature Switch
1991GeoPrizmN/AEngine mounted coolant fan switch; Temperature Switch
1991ToyotaCelica1.6LL4N/ATemperature Switch
1991ToyotaCorollaFWDN/ATemperature Switch
1990GeoPrizmN/AEngine mounted coolant fan switch; Temperature Switch
1990ToyotaCelica1.6LL4N/Aw/o Connector; Temperature Switch
1990ToyotaCorollaFWDN/ATemperature Switch
1989GeoPrizmN/AEngine mounted coolant fan switch; Temperature Switch
1989ToyotaCorollaFWDN/ATemperature Switch
1988ChevroletNovaN/AEngine mounted coolant fan switch; Temperature Switch
1988ToyotaCamryN/AEngine mounted coolant fan switch; Temperature Switch
1988ToyotaCorollaFXN/ATemperature Switch
1988ToyotaCorollaFX16N/ATemperature Switch
1988ToyotaCorollaFX16 GTSN/ATemperature Switch
1987BMW325eN/A99 Deg. C; Temperature Switch
1987BMW325esN/A99 Deg. C; Temperature Switch
1987BMW325iN/A99 Deg. C; Temperature Switch
1987BMW325isN/A99 Deg. C; Temperature Switch
1987ChevroletNovaN/AEngine mounted coolant fan switch; Temperature Switch
1987ToyotaCamryN/ATemperature Switch
1987ToyotaCamryN/AEngine mounted coolant fan switch; Temperature Switch
1987ToyotaCelicaN/ATemperature Switch
1987ToyotaCorollaFXN/ATemperature Switch
1987ToyotaCorollaFX16N/ATemperature Switch
1987ToyotaCorollaFX16 GTSN/ATemperature Switch
1987ToyotaSupraN/ATemperature Switch
1986BMW325eN/A99 Deg. C; Temperature Switch
1986BMW325esN/A99 Deg. C; Temperature Switch
1986ChevroletNovaN/AEngine mounted coolant fan switch; Temperature Switch
1986ToyotaCamry2.0LL4GASN/ATemperature Switch
1986ToyotaCelicaN/ATemperature Switch
1986ToyotaCorollaSedanFWD1.6LL4N/ATemperature Switch
1986ToyotaCorollaHatchbackFWD1.6LL4N/ATemperature Switch
1986ToyotaSupraN/ATemperature Switch
1985ChevroletNovaN/AEngine mounted coolant fan switch; Temperature Switch
1985ToyotaCamry2.0LL4N/AEngine mounted coolant fan switch; Temperature Switch
1985ToyotaCorolla1.6LL4N/ATemperature Switch
1984ToyotaCamry2.0LL4N/AEngine mounted coolant fan switch; Temperature Switch
1984ToyotaCorolla1.6LL4N/ATemperature Switch
1983ToyotaCamryN/AEngine mounted coolant fan switch; Temperature Switch
1982ToyotaTercelN/AEngine mounted coolant fan switch; Temperature Switch
1981ToyotaTercelN/AEngine mounted coolant fan switch; Temperature Switch
1979ChevroletMonza3.8LV6N/ATemperature Switch
1979ChevroletMonza3.2LV6N/ATemperature 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:

111359441265841550524155110317113231918942820745621182021282034243594449174918517438019768942815011894283201094846018A6623AC8579HS820MT0550SW512SW652SW8422

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