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Four Seasons 37811 HVAC Cut-Off Switch
| Brand | Four Seasons 37811 |
|---|---|
| Color | Green |
| Connector Gender | Female |
| Connector Shape | Oval |
| Description | Switch-pressure /system mount |
| Fitting Gender | Female |
| Fitting Thread Size | M12 |
| Material | Plastic / metal |
| Meets / Exceeds OEM? | Yes |
| Mnt Sys Loc | System mounted |
| Number of Terminals | 2 |
| Operate Psi Low Off | 6 |
| Operate Psi Low On | 28 |
| Style | Pressure |
| Type | Low cut-out |
| Fits | — |
OE direct replacement. Meets or exceeds OEM requirements for dependable system control.
Pressure switch. Low cut-out design helps regulate system pressure automatically.
Plastic and metal construction. Built with a female oval connector and M12 thread.
Cross-references Four Seasons 37811, UAC SW11423C and 71R6270 for the same application. See all 13.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Four Seasons Pressure Switch 37811
Four Seasons 37811 is a system-mounted HVAC cut-off pressure switch built for low-pressure control in automotive air conditioning systems. It uses a female oval connector, M12 female fitting thread, and a 2-terminal layout for direct pressure-switch service on the A/C circuit.
Key Features
- Low cut-out pressure switch for HVAC system protection
- Operates at 6 psi low off and 28 psi low on
- System-mounted design with M12 female fitting thread
- Female oval connector with 2 terminals
- Plastic and metal construction
- Green housing for identification
- Meets or exceeds OEM requirements
Product Details
This Four Seasons Pressure Switch line is built for HVAC service where accurate low-pressure cut-off control is required. Part number 37811 is a pressure-style switch that helps manage compressor operation based on system pressure, supporting proper A/C cycling in vehicles that use a low cut-out switch. It is a direct-fit style replacement for applications calling for this connector and thread configuration, including select Honda Civic and other vehicle platforms that use the same switch specification. Four Seasons 37811 is also referenced by cross numbers such as UAC SW11423C and 172286 for the same application.
What It Is Used For
- Restoring A/C compressor cut-off control when the original pressure switch fails
- Addressing intermittent compressor cycling caused by pressure-switch faults
- Correcting HVAC system shutdown triggered by a worn or inaccurate switch
- Replacing a damaged female connector or thread-matched pressure switch assembly
- Supporting proper low-pressure protection in automotive air conditioning systems
Installation Notes and Tips
Verify the connector shape, terminal count, and M12 thread size before installation. Confirm the vehicle uses a low cut-out pressure switch with the same operating points of 6 psi low off and 28 psi low on. Inspect the HVAC circuit and related wiring for corrosion or damage before installing the replacement switch. For fitment verification, compare the original part number and connector style on the vehicle, including Honda Civic applications and other matched make/model listings.
Quality Assurance
Four Seasons 37811 meets or exceeds OEM requirements for the specified application. The Pressure Switch product line is built for automotive HVAC service where accurate pressure-based control is required.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| No rows match your filter. | ||||