Help protect the A/C compressor and keep cab climate control working the way it should with the Four Seasons HVAC Cut-Off Switch / HVAC Pressure Switch (MPN 35833). It installs as a direct-fit replacement for a wide range of listed heavy-duty applications, including the 1981-1999 Kenworth C500 and W900, the 1983-2000 International 5070, the 1986-1993 Mack CS200P MID-LINER, the 1991-1999 Freightliner FL60, and the 1990-2000 Peterbilt 357 — see the Buyer's Guide tab for the full list of 80 applications.
This switch senses refrigerant pressure in the A/C system and opens or closes the compressor clutch circuit so operating pressure stays within the intended range. If pressure moves outside that range, it signals the clutch to disengage, helping guard the compressor against damaging conditions.
- Dual-listed part: classified as both an HVAC Cut-Off Switch and an HVAC Pressure Switch, so it appears under both names.
- Pressure-controlled switching: monitors A/C refrigerant pressure and controls the compressor clutch circuit accordingly.
- Direct-fit replacement: made to replace the switch on the listed applications.
Signs this part may need replacing include an A/C compressor clutch that won't engage or that cycles rapidly, or a system that stops cooling. Diagnose the cause first, since these symptoms can have other sources; if a faulty switch is the cause, replacing it with MPN 35833 restores proper switching.
Interchange: No interchange numbers are listed for this part. Manufacturer part number 35833.
