Four Seasons 20053 HVAC Cut-Off Switch

Four Seasons Pressure Switch 20053 Overview

The Four Seasons 20053 is a system-mounted HVAC cut-off pressure switch built for high-pressure A/C protection. It uses a 2-terminal pin connection, female 10mm x 1.25 fitting, and a closed-comp operating style to monitor refrigerant pressure in the air conditioning system.

Compatible With 2003-2006 Ford Expedition, Lincoln Navigator, and Lincoln Aviator applications listed below, this Four Seasons Pressure Switch 20053 meets or exceeds OEM requirements and uses a weather-pack design for secure electrical connection.

Key Features

• Four Seasons Pressure Switch line, part number 20053
• HVAC cut-off switch for high-pressure A/C system-mounted applications
• High cut-out style with 485 psi off pressure and 325 psi high-on pressure
• Female connector and female 10mm x 1.25 threaded fitting
• 2-terminal pin design with weather-pack connection
• Plastic and metal construction in beige
• Meets or exceeds OEM specifications

Detailed Description

The Four Seasons Pressure Switch 20053 is a pressure-operated HVAC cut-off switch used to monitor high-side A/C pressure and trigger system protection when pressure reaches the specified threshold. Its system-mounted design, closed operating state, and high cut-out calibration make it a direct-fit service part for select Ford and Lincoln SUVs. This part number 20053 is listed for 2003-2004 Ford Expedition, 2005-2006 Ford Expedition, 2003-2004 Lincoln Navigator, 2005-2006 Lincoln Navigator, and 2003-2005 Lincoln Aviator applications.

This part cross-references UAC SW11166C for the same application.

What It Helps Address

• A/C compressor shutdown caused by excessive high-side pressure
• Intermittent HVAC cycling tied to pressure switch failure
• Loss of pressure signal to the A/C control circuit
• Faulty system-mounted HVAC cut-off switch operation
• Pressure-related A/C protection issues on Ford Expedition, Lincoln Navigator, and Lincoln Aviator models

Installation Notes and Tips

Verify the connector style, 10mm x 1.25 thread size, and system-mounted location before installation. Confirm the vehicle’s A/C pressure switch specification matches the listed high cut-out calibration and electrical terminal layout. For best results, compare the original switch to part number 20053 before replacement and inspect the harness connector for corrosion or damage.

Quality Assurance

Four Seasons lists this pressure switch as meeting or exceeding OEM requirements, supporting a direct replacement standard for the specified Ford and Lincoln HVAC applications.