Four Seasons 37313 A/C Clutch Cycle Switch

Four Seasons 37313 A/C Clutch Cycle Switch

The Four Seasons Pressure Switch 37313 is a system-mounted A/C clutch cycle switch built for 12-volt HVAC systems. It uses a female M12 x 1.50 fitting, a 2-terminal blade connection, and a weather-pack design for secure electrical and pressure-side integration.

Compatible With select Volvo applications, including 1993 Volvo 240 and 1993-1995 Volvo 940 and Volvo 960 models, this pressure switch is a direct-fit service part for vehicles that use a cycling-style A/C control setup. Four Seasons 37313 meets or exceeds OEM requirements and is built with plastic and metal construction for HVAC service use.

Key Features

• Brand: Four Seasons Pressure Switch line
• Part number: 37313
• Part type: A/C clutch cycle switch
• System mount pressure switch design
• Female M12 x 1.50 fitting thread
• 2 blade terminals with male terminal gender
• 12-volt electrical specification
• Cycling style for pressure-based A/C control
• Weather-pack connection design
• Meets or exceeds OEM specifications

Detailed Description

Four Seasons 37313 is a pressure-operated HVAC switch used in A/C clutch cycling circuits. It is designed for system mount installation and monitors refrigerant pressure to help control compressor engagement in vehicles equipped with the proper cycling switch setup. This part number 37313 is listed for 1993 Volvo 240, 1993-1995 Volvo 940, and 1993-1995 Volvo 960 applications, making it a focused replacement for Volvo HVAC service work.

This part cross-references AMS Automotive 4905 for the same application. The Four Seasons Pressure Switch line is built for service replacement in automotive climate control systems where accurate pressure signaling and reliable terminal connection are required.

What It Helps Solve

• A/C compressor cycling problems caused by a failed pressure switch
• Intermittent compressor engagement in Volvo HVAC systems
• Pressure signal loss at the clutch control circuit
• Electrical connection issues at the switch terminal interface
• HVAC performance problems related to incorrect pressure sensing

Installation Notes and Tips

Verify the thread size, terminal style, and system mount location before installation. Confirm vehicle application against the existing switch and HVAC connector layout on your Volvo 240, Volvo 940, or Volvo 960. Because pressure switches are tied to refrigerant system operation, the A/C system should be checked for proper charge and circuit condition before replacing the part.

Quality Assurance

Four Seasons 37313 meets or exceeds OEM specifications and is built as a pressure switch replacement for automotive HVAC service. The Four Seasons Pressure Switch line is intended for direct replacement use in supported applications, including select Volvo 240, Volvo 940, and Volvo 960 models.