A/C System Switch for 1989-1999 Kenworth T400 & More - Four Seasons 35825

Keep your A/C compressor protected from dangerous high-side pressure with the Four Seasons HVAC Pressure Switch 35825, a system-mounted high cut-out pressure switch that reads refrigerant pressure and opens the circuit to disengage the compressor clutch when pressure climbs too high. It's a direct-fit replacement for a wide range of heavy trucks, including the 1997-2005 Freightliner Century Class, 1994-2003 Freightliner FL70, 1990-1992 International 4700, 1985-2003 Kenworth K100E, 1987-2014 Kenworth T800, and 1990-2000 Mack CH — see the "Vehicles it fits" section for the full list of 106 applications.

• High cut-out protection: opens to disengage the compressor clutch when system pressure gets too high, helping guard the A/C circuit.
• Zinc coated: a zinc coating helps resist corrosion.
• Includes seals: contains the gaskets, o-rings, or seals needed to properly replace the product.
• Easy identification: color coded, and built for vehicle-specific applications.

Backed by over 50 years of Four Seasons mobile A/C experience, this switch is engineered and tested for reliable operation. If a failed high cut-out pressure switch is the cause of a compressor that won't cycle or an A/C system that trips off, this replaces it. Diagnose the cause before replacing, and confirm the fit for your vehicle in the "Vehicles it fits" section.

Product information is for general reference and may contain errors. See our Disclaimer.