Four Seasons HVAC Cut-Off Switch P/N:35866

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$64.99
MPN: 35866
Item Package Quantity: 1
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Four Seasons HVAC Cut-Off Switch P/N:35866
Four Seasons HVAC Cut-Off Switch P/N:35866
$64.99

Help protect your air-conditioning compressor with this Four Seasons switch, part number 35866, a system-mounted low cut-out pressure switch (listed as an HVAC cut-off switch) designed to interrupt compressor operation when refrigerant pressure drops below its cut-out point. It fits many vehicles, among them the 1981-1983 Plymouth Sapporo, 1981-1982 Plymouth Arrow Pickup and 1981-1982 Plymouth Champ, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list and engine details.

  • Low cut-out protection: Mounts on the A/C system and monitors refrigerant pressure, helping keep the compressor from running when system pressure is too low.
  • Corrosion resistance: Zinc coated to resist corrosion.
  • Sealing parts in the box: Contains the gaskets, O-rings or seals needed to properly replace the switch.
  • Easy identification: Color coded so the correct switch is easy to pick out.

This switch is built for vehicle-specific applications, and Four Seasons backs its products with over 50 years of mobile A/C experience.

Signs this switch may need replacing include a compressor that will not engage or an A/C system blowing warm air. A low refrigerant charge can cause the same symptoms, so check system pressure and diagnose the cause before replacing the switch. If a failed low cut-out switch is the cause, part number 35866 replaces it.

Frequently Asked Questions

What does the Four Seasons 35866 switch do?

It is a system-mounted low cut-out pressure switch. It is designed to interrupt A/C compressor operation when refrigerant pressure drops below its cut-out point, which helps protect the compressor.

Is this the right Champ switch for my Plymouth?

Four Seasons 35866 is listed as a direct-fit replacement for the 1981-1982 Plymouth Champ. Check the Buyer's Guide tab to confirm your exact vehicle.

What other vehicles does this pressure switch fit?

It fits many vehicles, including the 1981-1983 Plymouth Sapporo and the 1981-1982 Plymouth Arrow Pickup. The Buyer's Guide tab has the full list.

What comes with the switch?

The switch comes with the gaskets, O-rings or seals needed to properly replace it. It is zinc coated to resist corrosion and color coded for easy identification.

How do I know if my low-pressure cut-out switch is bad?

A compressor that won't engage or A/C that blows warm can be signs of a failed switch. A low refrigerant charge causes the same symptoms, so check system pressure before replacing it.