OPGI.com works best with JavaScript enabled.
Black Friday is here! Free shipping over $99 + up to 20% off Restoration - use code: BIGDEAL20W
  • As seen on
  • Junkyard Empire
  • Sam's Garage

Old Air Products

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

Fits 1974–1977 Chevelle View fitment for 4 models
Part# CH28451
Sold As Each
Eligible for Price Match
Limited-Time Offer
$29.99
Save an extra 5%Use BIGDEAL20W at checkout to see sale price
List Price: $33.95
Arriving Soon
Add To Wishlist 

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

  • 2024 Chevelle, El Camino 64-77 380
  • 2024 GM G-Body 1978-1988 207
  • 2024 Monte Carlo 70-77 236
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)
  • Headshot of OPGI Employee
    Have a Question? Chat with an Expert or Call 1‑800‑243‑8355
    Mon‑Fri 8:00‑4:30 PT Experts are currently offline
  • Low Prices. Price Match Guarantee
  • GM Automotive Experts. We know car parts
  • Guaranteed Fitment. 100% factory accurate
  • Superior Selection. Largest selection of in-stock parts

Customers Who Viewed This Item Also Viewed

Reviews (0)

UH OH! Product reviews didn't load.
Please reload the page, or unblock our review partner Yotpo.com.
AC Safety Switch, 1974-78 CH/EC/MC, Binary Pressure
Old Air Products AC Safety Switch, 1974-78 CH/EC/MC, Binary Pressure