Protects compressor and air conditioning components from excessive pressure during R-12 to R-134a conversions
Cuts off compressor at excessive pressure (398 psi), allows compressor to resume operation when pressure drops to safe 315 psi
For most '78-'93 cars, vans and pickups
Kit comes complete with everything needed to install this system in most '78-'93 vehicles with 3/16" high-side port: 90° steel port adapter and high-pressure switch, electrical pigtail harness with boot and instructions. Easy to install.