HomeBelts and Cooling > SwitchesFour Seasons 36478 Engine Cooling Fan Switch - Lower
Part #: 36478

Four Seasons 36478 Engine Cooling Fan Switch - Lower

Temperature Switch, Lower
⚙️ 5 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Temperature Switch, Lower
🚗Fitment: Cadillac, Catera
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Reliable Engine Cooling Fan Switch for Cadillac Catera

The Four Seasons Temperature Switch part number 36478 is designed specifically for the Cadillac Catera. This engine cooling fan switch ensures precise temperature control by activating and deactivating the cooling fan at specified temperature ranges, helping maintain optimal engine performance.

  • Connector color: Brown with a round female connector
  • Three terminal pins for secure electrical connection
  • Fitting thread size: M22 x 1.50 male thread for radiator mount installation
  • Temperature activation range: On at 220-248°F, Off at 212-239°F
  • Meets or exceeds OEM specifications for reliable operation

About the Four Seasons Temperature Switch Product Line

The Four Seasons Temperature Switch line focuses on precision temperature control components for engine cooling systems. This product line is engineered to provide accurate temperature sensing and switching functions, ensuring the cooling fan operates within the correct temperature thresholds. The 36478 switch is part of this line, offering dependable radiator mount installation and compatibility with specific vehicle models like the Cadillac Catera.

Detailed Product Description

This engine cooling fan switch features a brown, round female connector with three terminal pins, designed for a secure and reliable electrical connection. The switch mounts directly to the radiator using a male M22 x 1.50 threaded fitting, ensuring a proper seal and fit. It activates the cooling fan when the engine temperature reaches between 220 and 248 degrees Fahrenheit and turns it off between 212 and 239 degrees Fahrenheit, maintaining efficient engine temperature regulation. The part number 36478 is engineered to meet or exceed original equipment manufacturer (OEM) standards, providing a dependable replacement for the Cadillac Catera cooling system.

Common Applications and Issues Addressed

  • Prevents engine overheating by activating the cooling fan at the correct temperature
  • Ensures cooling fan deactivation to avoid unnecessary power consumption
  • Replaces faulty or worn temperature switches causing erratic fan operation
  • Maintains proper engine temperature for optimal performance and longevity
  • Helps resolve radiator fan cycling issues in Cadillac Catera vehicles

Installation Notes and Tips

When installing the Four Seasons Temperature Switch 36478, ensure the radiator is cool to avoid injury. Use the M22 x 1.50 male threaded fitting to securely mount the switch to the radiator. Confirm the connector is the correct brown, round female type with three terminals to match your vehicle’s wiring harness. Verify the switch activates and deactivates within the specified temperature ranges after installation to ensure proper function.

Quality Assurance and Warranty

The Four Seasons Temperature Switch 36478 is manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. This part undergoes rigorous quality control testing to maintain consistent temperature switching accuracy. Please refer to Four Seasons’ warranty policy for specific coverage details.

BrandFour Seasons
Part Number36478
PositionTemperature Switch, Lower
Connector ColorBrown
Connector GenderFemale
Connector ShapeRound
DescriptionSwitch-Temp /Radiator Mount
Fitting GenderMale
Fitting ThreadM22x1.500
Fitting Thread SizeM22 x 1.50
Functiontemperature switch
Meets / Exceeds OEM?YES
Mnt Sys LocRadiator Mount
StyleTemperature
Temperature Off212 / 239
Temperature On220 / 248
Terminal Pin Qty.3
Terminal Quantity3
TypeTemperature

This part fits 5 vehicles. Search below:

YearMakeModelPositionNotes
2001CadillacCateraLowerRadiator Mounted Engine Cooling Fan Switch; Temperature Switch
2000CadillacCateraLowerRadiator Mounted Engine Cooling Fan Switch; Temperature Switch
1999CadillacCateraLowerRadiator Mounted Engine Cooling Fan Switch; Temperature Switch
1998CadillacCateraLowerRadiator Mounted Engine Cooling Fan Switch; Temperature Switch
1997CadillacCateraLowerRadiator Mounted Engine Cooling 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:

111364783647890376209A06815SW1423

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