HomeBelts and Cooling > SensorsFour Seasons 37904 Engine Coolant Temperature Sensor
Part #: 37904

Four Seasons 37904 Engine Coolant Temperature Sensor

Coolant Temp Sensor
⚙️ 31 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Coolant Temp Sensor
🚗Fitment: Toyota, Prius, Prius C, Prius Prime, Prius V, and Prius Plug-In
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Coolant Temperature Sensor for Toyota Prius Models

The Four Seasons Coolant Temp Sensor 37904 is designed to provide accurate temperature readings for your Toyota Prius, Prius C, Prius Plug-In, Prius Prime, and Prius V. This sensor helps maintain optimal engine performance by monitoring coolant temperature and ensuring your vehicle's cooling system operates efficiently.

  • Connector Gender: Female
  • Connector Shape: Rectangular
  • Fitting Thread Size: M16-1.50
  • Number of Terminals: 2
  • Meets or exceeds OEM specifications
  • Compatible with multiple Toyota Prius models

About the Four Seasons Coolant Temp Sensor Product Line

The Four Seasons Coolant Temp Sensor line focuses on delivering precise and durable engine coolant temperature sensors that meet or exceed original equipment manufacturer standards. The 37904 sensor is part of this line, ensuring reliable fitment and performance for Toyota Prius vehicles. This product line emphasizes quality and compatibility to support proper engine management and cooling system function.

Detailed Product Description

The Four Seasons Coolant Temp Sensor 37904 features a female rectangular connector with two terminals, designed for secure and reliable electrical connections. The sensor’s M16-1.50 fitting thread size ensures proper installation and sealing within the engine cooling system. By accurately measuring coolant temperature, this sensor provides critical data to the engine control unit, helping regulate fuel injection, ignition timing, and cooling fan operation. This sensor is compatible with Toyota Prius, Prius C, Prius Plug-In, Prius Prime, and Prius V models, making it a suitable replacement part for maintaining your vehicle’s cooling system integrity.

Common Issues Addressed by This Coolant Temp Sensor

  • Erratic or inaccurate engine temperature readings
  • Engine overheating due to faulty temperature monitoring
  • Poor fuel economy caused by incorrect temperature data
  • Check engine light triggered by coolant temperature sensor faults
  • Cooling fan malfunction or improper operation

Installation Notes and Tips

  • Ensure the engine is cool before removing the old sensor to avoid burns
  • Use the correct M16-1.50 thread size to avoid cross-threading
  • Verify the connector is female and rectangular to match the vehicle wiring harness
  • Check for proper sealing to prevent coolant leaks
  • Consult the vehicle’s service manual for torque specifications and sensor location

Quality Assurance and Warranty

The Four Seasons Coolant Temp Sensor 37904 meets or exceeds OEM standards, ensuring reliable performance and durability. This sensor undergoes rigorous testing to confirm fitment and function for Toyota Prius models. Please refer to Four Seasons’ warranty policy for specific coverage details.

BrandFour Seasons
Part Number37904
PositionCoolant Temp Sensor
Connector GenderFemale
Connector ShapeRectangular
DescriptionCoolant Temp Sensor
Fitting Thread SizeM16-1.50
Meets / Exceeds OEM?YES
Number of Terminals2
StyleCoolant Temp Sensor
TypeCoolant Temp Sensor

This part fits 31 vehicles. Search below:

YearMakeModelPositionNotes
2017ToyotaPriusN/ACoolant Temp Sensor
2017ToyotaPrius CN/ACoolant Temp Sensor
2017ToyotaPrius PrimeN/ACoolant Temp Sensor
2017ToyotaPrius VN/ACoolant Temp Sensor
2016ToyotaPriusN/ACoolant Temp Sensor
2016ToyotaPrius CN/ACoolant Temp Sensor
2016ToyotaPrius VN/ACoolant Temp Sensor
2015ToyotaPriusN/ACoolant Temp Sensor
2015ToyotaPrius CN/ACoolant Temp Sensor
2015ToyotaPrius Plug-InN/ACoolant Temp Sensor
2015ToyotaPrius VN/ACoolant Temp Sensor
2014ToyotaPriusN/ACoolant Temp Sensor
2014ToyotaPrius CN/ACoolant Temp Sensor
2014ToyotaPrius Plug-InN/ACoolant Temp Sensor
2014ToyotaPrius VN/ACoolant Temp Sensor
2013ToyotaPriusN/ACoolant Temp Sensor
2013ToyotaPrius CN/ACoolant Temp Sensor
2013ToyotaPrius Plug-InN/ACoolant Temp Sensor
2013ToyotaPrius VN/ACoolant Temp Sensor
2012ToyotaPriusN/ACoolant Temp Sensor
2012ToyotaPrius CN/ACoolant Temp Sensor
2012ToyotaPrius Plug-InN/ACoolant Temp Sensor
2012ToyotaPrius VN/ACoolant Temp Sensor
2011ToyotaPriusN/ACoolant Temp Sensor
2010ToyotaPriusN/ACoolant Temp Sensor
2009ToyotaPriusN/ACoolant Temp Sensor
2008ToyotaPriusN/ACoolant Temp Sensor
2007ToyotaPriusN/ACoolant Temp Sensor
2006ToyotaPriusN/ACoolant Temp Sensor
2005ToyotaPriusN/ACoolant Temp Sensor
2004ToyotaPriusN/ACoolant Temp Sensor

* 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:

1712514379048942947010A14254CT0035SU10443

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