Four Seasons A/C Clutch Cycle Switch,Thermostatic Switch P/N:35820

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$46.99
MPN: 35820
Item Package Quantity: 1
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Four Seasons A/C Clutch Cycle Switch,Thermostatic Switch P/N:35820
Four Seasons A/C Clutch Cycle Switch,Thermostatic Switch P/N:35820
$46.99

Control A/C compressor clutch cycling and help protect the evaporator from freezing with the Four Seasons A/C Clutch Cycle Switch / Thermostatic Switch (MPN 35820). This system-mounted, adjustable cycling temperature switch drops in as a direct-fit replacement for the listed applications, including the 1967-1971 Ford Mustang, 1970-1977 American Motors Gremlin and Hornet, 1973-1979 Honda Civic, multiple 1981-1989 Mack DM, R, RD and U trucks, the 1972-1976 Mazda 808, and the 1967-1971 Mercury Cougar — see the Buyer's Guide tab for the full list.

A cycling switch senses evaporator temperature through its capillary tube and opens or closes the circuit to the compressor clutch, cycling the compressor to regulate cooling and help keep the evaporator from icing over. If a failed cycling switch is the cause of a compressor that won't cycle or a system that freezes up, this replaces it.

  • OE-style connectors: quality contacts for proper conductivity.
  • Metal switch: 2-terminal, open-blade connector, rated 12 volts.
  • Adjustable cycling control: driver-adjustable knob with a 406.4 mm capillary sensing tube.
  • Seal hardware: includes the gaskets, o-rings, or seals needed to complete the replacement.

Country of origin: China. Manufacturer part number 35820.

Frequently Asked Questions

What does the Four Seasons 35820 do?

It's an A/C clutch cycle / thermostatic switch that senses evaporator temperature through its capillary tube and cycles the compressor clutch on and off to regulate cooling.

What are signs this switch may need replacing?

Signs may include a compressor clutch that won't cycle, a system that runs continuously, evaporator icing, or intermittent cooling. Diagnose the cause before replacing, since other parts can cause these.

Is this switch adjustable?

Yes. It's an adjustable cycling temperature switch with a driver-adjustable knob used to set the cycling point.

What's included and how does it connect?

It uses OE-style connectors with a 2-terminal, open-blade connection rated at 12 volts, and includes the gaskets, o-rings, or seals needed to complete the replacement.

Will it fit my vehicle?

It fits many 1967-1989 applications across Ford, Mercury, American Motors, Honda, Mazda and Mack. Check the Buyer's Guide tab to confirm your exact year, make and model.