Four Seasons 37500 Engine Coolant Temperature Sensor

Four Seasons Coolant Temp Sensor 37500

The Four Seasons 37500 coolant temp sensor is an OE-style engine coolant temperature sensor built for accurate temperature signal input to the vehicle’s engine management system. With a female oval connector, 2 terminals, and an M12-1.25 fitting thread size, it is a direct-fit replacement for select Volvo applications.

Compatible with Volvo C70, S70, S90, V70, V90, 850, and 960 models, this Four Seasons coolant temp sensor supports reliable coolant temperature reporting for drivability and engine control. The Four Seasons 37500 is made to meet or exceed OEM requirements for the listed applications.

Key Features

• Engine coolant temperature sensor for select Volvo vehicles
• Female oval connector with 2 terminals
• M12-1.25 fitting thread size
• OE-style replacement that meets or exceeds OEM requirements
• Four Seasons part number 37500

Product Details

This coolant temp sensor from Four Seasons is designed for accurate coolant temperature feedback, which the engine control system uses for fuel delivery, idle strategy, and temperature-related operation. It is a direct replacement for select Volvo 850, 960, C70, S70, S90, V70, and V90 applications, making it a practical choice when servicing a faulty engine coolant temperature sensor. Part number 37500 is also referenced under cross numbers such as 3545031 and 91864860 for the same application.

Common Issues It May Solve

• Incorrect coolant temperature readings on the dash or scan tool
• Hard starting when the engine is cold
• Rough idle or unstable engine operation
• Poor fuel control caused by inaccurate temperature input
• Cooling system warning or sensor fault codes

Installation Notes and Tips

Verify connector style, thread size, and vehicle application before installation. This sensor uses a female oval connector and M12-1.25 threads, so matching the original sensor design is important for proper fitment. Inspect the connector terminals and surrounding cooling system components during service, and confirm the cooling system is at a safe temperature before removal or replacement.

Quality Assurance

Four Seasons lists this coolant temp sensor as meeting or exceeding OEM requirements for the specified applications. That specification supports consistent replacement quality for Volvo cooling and engine management service work.

Fitment

• Fits 1998 Volvo C70, coolant temp sensor
• Fits 1998 Volvo S70, coolant temp sensor
• Fits 1997-1998 Volvo S90, coolant temp sensor
• Fits 1998 Volvo V70, coolant temp sensor
• Fits 1997-1998 Volvo V90, coolant temp sensor
• Fits 1993-1997 Volvo 850, coolant temp sensor
• Fits 1992-1997 Volvo 960, coolant temp sensor