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Four Seasons 37278 HVAC Cut-Off Switch
| Brand | Four Seasons 37278 |
|---|---|
| Color | Black |
| Connector Gender | Male |
| Connector Shape | Rectangular |
| Description | Switch-pressure /system mount |
| Fitting Thread Size | 7/16 in. x 20 |
| Meets / Exceeds OEM? | Yes |
| Mnt Sys Loc | System mounted |
| Number of Terminals | 2 |
| Off Pressure | 175 |
| Operate Psi High Off | 175 |
| Operate Psi High On | 265 |
| Style | High cut-out |
| Type | Pressure |
| Fits | — |
OE direct replacement. Meets OEM requirements for a dependable pressure switch fit.
High cut-out design. Helps control system pressure with precise on and off points.
System-mounted switch. Built as an HVAC cut-off switch for pressure control.
Cross-references Four Seasons 37278, MTC/Ronak 1454 and UAC SW11191 for the same application. See all 14.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Four Seasons 37278 Pressure Switch
Four Seasons 37278 is a black HVAC cut-off pressure switch for system-mounted applications. It uses a male rectangular connector, 2 terminals, and a 7/16 in. x 20 fitting thread size for a direct-style replacement in the air conditioning pressure control circuit.
Built as a high cut-out pressure switch, this part opens at 175 psi and closes at 265 psi to help regulate refrigerant system pressure. It meets or exceeds OEM requirements and is listed under the Four Seasons Pressure Switch line for HVAC service work on vehicles such as Honda Civic and Toyota Camry applications where the correct pressure switch specification is required.
Key Features
- Part number: 37278
- Four Seasons Pressure Switch line
- HVAC cut-off switch, high cut-out style
- Black housing with male rectangular connector
- 2-terminal, system-mounted design
- 7/16 in. x 20 fitting thread size
- Off pressure: 175 psi
- Operate high off: 175 psi
- Operate high on: 265 psi
- Meets or exceeds OEM specifications
Product Details
This Four Seasons HVAC pressure switch is used in the refrigerant control circuit to monitor system pressure and trigger cut-off operation at the specified pressure points. The system-mounted design and threaded fitting support service replacement where the original switch uses the same connector style, terminal count, and pressure range. Cross-reference part numbers include UAC SW11191 and MTC/Ronak 1454 for the same application.
Common Issues It Can Address
- Air conditioning compressor cycling at the wrong pressure
- HVAC system cut-off faults tied to pressure switch failure
- Inoperative A/C operation caused by an open or failed pressure switch
- Incorrect refrigerant pressure signal to the control circuit
- Replacement needs for a worn or damaged system-mounted switch
Installation Notes
Verify the connector shape, terminal count, thread size, and pressure specification before installation. Confirm the vehicle’s HVAC service procedure and refrigerant system condition before replacing the switch. For fitment-based searches, this part is commonly referenced for Honda Civic and Toyota Camry HVAC pressure switch replacement applications, including 2006-2011 Honda Civic and 2007-2011 Toyota Camry search terms where the matching pressure switch specification is required.
Quality Assurance
Four Seasons lists this part as meeting or exceeding OEM requirements, making it a specification-based replacement for HVAC pressure control service.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| No rows match your filter. | ||||