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Photo of AC Compressor Switch, 1974-78 CH/EC/MC, Binary Pressure
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Old Air Products

AC Compressor Switch, 1974-78 CH/EC/MC, Binary Pressure

Part# : CH28451
Sold As: Each
Ship Size: Standard
Price Match: Eligible
$29.99
List Price: $33.95
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Vehicle Specific View fitment for 4 models
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A must-have switch

Factory-correct reproduction

This authentic reproduction switch mounts to the “VIR” (valve in receiver) and acts as a safety shut-off for the compressor in the event of a leak which is signaled by low pressure. The Hi/Lo switch is an excellent upgrade for cycling systems and features the correct terminals for a hassle-free connection to original wiring.

Find Item In These Catalogs

  • 2025 Chevelle, El Camino 64-77 359
  • 2025 GM G-Body 1978-1988 199
  • 2025 Monte Carlo 70-77 212
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1974–1977 Chevrolet Chevelle binary pressure
1974–1978 Chevrolet El Camino 1974–1977: binary pressure
1978: (Binary Pressure)
1978 Chevrolet Malibu (Binary Pressure)
1974–1978 Chevrolet Monte Carlo 1974–1977: Binary Pressure
1978: (Binary Pressure)
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AC Compressor Switch, 1974-78 CH/EC/MC, Binary Pressure
Old Air Products AC Compressor Switch, 1974-78 CH/EC/MC, Binary Pressure