Four Seasons HVAC Binary Switch 20976
Four Seasons HVAC Binary Switch 20976 - view 2
Four Seasons HVAC Binary Switch 20976 - view 3
Four Seasons HVAC Binary Switch 20976
Four Seasons HVAC Binary Switch 20976 - view 2
Four Seasons HVAC Binary Switch 20976 - view 3

Four Seasons HVAC Binary Switch P/N:20976

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$55.99
MPN: 20976
Item Package Quantity: 1
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Four Seasons HVAC Binary Switch P/N:20976
Four Seasons HVAC Binary Switch P/N:20976
$55.99

Guard the air-conditioning compressor and keep the system cycling correctly with the Four Seasons Binary Switch 20976, a direct-fit replacement for the 1990-1993 Mazda Miata. This system-mounted binary pressure switch monitors refrigerant pressure and opens the compressor clutch circuit when pressure drops too low or climbs too high, helping keep the compressor from running outside its safe pressure range.

  • Zinc coated: resists corrosion.
  • Vehicle-specific application: built for the listed vehicle.
  • Sealing hardware: contains the gaskets, o-rings, or seals needed to properly complete the replacement.
  • Color coded: for easy identification during service.

Backed by over 50 years of mobile A/C experience, Four Seasons engineers and tests this switch for dependable operation. Signs the original switch may need replacing include an A/C compressor that won't engage or one that fails to cut out at its pressure limits. Diagnose the A/C system first to confirm the switch is the cause before replacing it.

Interchange: 1551046 · 207793 · 11120976 · 19188195 · 1711495 · NA0161503 · A07793 · 50007 · MT0621 · SW11218C

This part cross-references / interchanges with the following part numbers:

1551046, 207793, 20976, 11120976, 19188195, 1711495, NA0161503, A07793, 50007, MT0621, SW11218C

Frequently Asked Questions

What does the Four Seasons 20976 binary switch do?

It's a system-mounted binary pressure switch that monitors A/C refrigerant pressure and opens the compressor clutch circuit when pressure is too low or too high, helping keep the compressor within its safe operating range.

Does this switch fit my Mazda Miata?

It's a direct-fit replacement for the 1990-1993 Mazda Miata. Check the Buyer's Guide tab to confirm the application for your specific vehicle.

Does it come with seals?

Yes. It contains the gaskets, o-rings, or seals needed to properly complete the replacement.

What are signs this switch may need replacing?

An A/C compressor that won't engage, or one that fails to cut out at its pressure limits, can be a sign. Diagnose the A/C system first to confirm the switch is the cause.

Is the switch corrosion resistant?

Yes, it is zinc coated to resist corrosion, and it's color coded for easy identification during service.

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