Help keep your A/C compressor clutch cycling as designed with the Four Seasons switch 35720, a system-mounted, preset cycling temperature switch, also listed as an A/C clutch cycle switch / thermostatic switch. It fits many vehicles, among them the 1977-1979 Chevrolet Impala, 1978-1979 Chevrolet Malibu and 1987 Dodge Grand Caravan, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list and engine details.
A cycling temperature switch responds to temperature in the A/C system and turns the compressor clutch on and off. This on-off cycling is intended to help keep the evaporator from icing over. Four Seasons engineers and tests its products and brings more than 50 years of mobile A/C experience to them.
- OE-style connectors: used for the switch's connection to the vehicle's wiring.
- Quality contacts: help ensure proper electrical conductivity.
- Sealing components included: comes with the gaskets, O-rings, or seals needed to replace the switch properly.
- Precision engineered: a preset cycling temperature design.
Signs this part may need replacing: the compressor clutch cycles on and off too quickly, the clutch does not engage, airflow from the vents drops as the evaporator frosts over, or the A/C blows warm air. Other A/C faults can cause the same symptoms, so diagnose the system before replacing the switch.
