Four Seasons 37904 Engine Coolant Temperature Sensor

Coolant Temperature Sensor for Toyota Hybrid Applications

Four Seasons 37904 is a coolant temp sensor built for accurate engine temperature monitoring in select Toyota hybrid models. It uses a female rectangular connector, 2 terminals, and an M16-1.50 fitting thread size for OE-style service replacement.

Compatible with Toyota Prius, Prius C, Prius V, and Prius Plug-In applications, this Four Seasons Coolant Temp Sensor supports proper temperature signal input for the engine control system. Four Seasons 37904 meets or exceeds OEM requirements for the listed applications.

Key Features

• Brand: Four Seasons Coolant Temp Sensor
• Part number: 37904
• Female rectangular connector for a secure electrical connection
• 2-terminal design
• M16-1.50 fitting thread size
• Meets or exceeds OEM specifications
• Direct-fit style for listed Toyota hybrid applications

Product Details

This engine coolant temperature sensor is used to report coolant temperature to the vehicle’s control system, helping maintain accurate engine management in hybrid operation. Four Seasons 37904 is a practical OE-style replacement for drivers servicing a Toyota Prius coolant temp sensor concern or replacing a worn sensor on Prius C, Prius V, or Prius Plug-In models. This part cross-references Global Parts Distributors LLC 1712514 for the same application.

Common Issues It May Address

• Incorrect coolant temperature readings
• Illuminated check engine light related to temperature sensor faults
• Hard starting or rough running tied to inaccurate temperature input
• Cooling system control issues caused by a failing sensor
• Diagnostic trouble codes associated with coolant temperature signal errors

Installation Notes and Tips

• Verify connector shape, terminal count, and thread size before installation.
• Confirm the sensor location on the engine cooling circuit for your specific Toyota Prius, Prius C, Prius V, or Prius Plug-In application.
• Inspect the connector and wiring for corrosion or damage before installing the replacement sensor.
• Use the vehicle service information for torque and coolant service procedures.

Quality Assurance

Four Seasons 37904 is manufactured to meet or exceed OEM requirements for the listed fitments, supporting dependable replacement quality for Toyota hybrid cooling system service.