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Four Seasons 37805 HVAC Pressure Switch
| Brand | Four Seasons 37805 |
|---|---|
| Color | Black |
| Connector Gender | Female |
| Connector Shape | Oval |
| Description | Switch-pressure /system mount |
| Fitting Gender | Female |
| Fitting Thread Size | 7/16 in. x 20 |
| Material | Plastic / metal |
| Meets / Exceeds OEM? | Yes |
| Mnt Sys Loc | System mounted |
| Number of Terminals | 2 |
| Operate Psi Low Off | 3 |
| Operate Psi Low On | 27 |
| 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. Combines durability with a compact black housing.
Cross-references Four Seasons 37805, OSC 1477 and 20PS403 for the same application. See all 17.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Four Seasons 37805 Pressure Switch Overview
The Four Seasons 37805 pressure switch is a system-mounted HVAC low cut-out switch built for pressure-based compressor control. It uses a black plastic and metal body with a female oval connector and 2 terminals, and it meets or exceeds OEM requirements for direct replacement use.
For drivers and technicians searching for an HVAC pressure switch for Ford, Chevrolet, and Dodge applications, this Four Seasons pressure switch 37805 provides a straightforward OE-style service part for pressure monitoring in the air conditioning system.
Key Features
- Brand: Four Seasons Pressure Switch
- Part number: 37805
- HVAC pressure switch, low cut-out style
- System mounted design
- Female oval connector with 2 terminals
- Female fitting with 7/16 in. x 20 thread size
- Black plastic / metal construction
- Operate pressure: 27 psi on, 3 psi off
- Meets or exceeds OEM specifications
Product Details
The Four Seasons Pressure Switch line is built for HVAC pressure control in automotive air conditioning systems. This 37805 switch monitors system pressure and opens or closes the circuit at the specified low-pressure thresholds, helping maintain proper compressor operation. If you are replacing a faulty AC pressure switch on a Ford, Chevrolet, or Dodge vehicle, this part number 37805 is a direct-fit service option for pressure-switch applications that use the same connector and thread configuration.
This part cross-references OSC 1477 for the same application.
Common Problems This Part Can Address
- Compressor cycling caused by a failing low-pressure switch
- AC system shutdown from incorrect pressure signal input
- Intermittent compressor engagement related to switch wear
- HVAC performance issues tied to a damaged pressure sensor circuit
- Connector or thread mismatch during pressure switch replacement
Installation Notes and Tips
Verify the connector shape, terminal count, and 7/16 in. x 20 fitting thread size before installation. Confirm the system-mounted location and pressure operating points match the original switch specification. When replacing an HVAC pressure switch on Ford, Chevrolet, or Dodge vehicles, compare the original part number 37805 and the vehicle’s AC service data to ensure correct application.
Quality Assurance
This Four Seasons pressure switch meets or exceeds OEM requirements for replacement use. It is built as an OE-style HVAC service component for pressure-controlled air conditioning systems.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| No rows match your filter. | ||||