Description
Direct-fit pressure switch for heavy-duty truck A/C systems, marked 2601237. This normally closed switch features a 1/4″ female fitting, closes at 180 PSI and opens at 265 PSI, and comes with an integrated harness. Compatible with R12/R134a refrigerant systems on Business Class M2 and FL Series models.
Signs You Need a New Pressure Switch
- Compressor clutch not engaging when A/C is activated
- Air conditioning blows warm air instead of cold
- High pressure port reading abnormally high with compressor off
- Intermittent A/C cooling or thermal bypass activation
Specifications
| Manufacturer | Freightliner OEM |
|---|---|
| Part Number | 2601237 |
| OEM Number | A22-30930-001 |
| Part Type | High Pressure Switch |
| Operation | Normally Closed |
| Fitting Type | Female 1/4″ NPT thread |
| Close/Open Pressure | 180 PSI close / 265 PSI open |
| Refrigerant | R12/R134a compatible |
| Connector | With harness |
Cross References
This part replaces or is equivalent to the following part numbers:
- Freightliner OEM: A22-30930-001
- Also known as: 1490, 850-8407, 917-1008, PTAC1490
Applications
This high pressure switch fits Freightliner trucks including:
- Freightliner Business Class (1994–2003)
- Freightliner M2 106/112 Models
- Freightliner FL50, FL60, FL70 Series
- Heavy-duty trucks with 1/4″ NPT high pressure port
Verify your engine serial number and refrigeration system configuration before ordering to confirm fitment.
