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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
If your changing your compressor
We pack these well also
Firebird TA's are Flat right to the to the bottom
Choose either or side as needed
Delivery is covered on these when ordered and paid on line for supply
Proportioning Valve: 79-81 Disc x 4 NOS - GM New Old Stock - SOLD OUT NO MORE GM If your changing your compressorSOLD OUT late 2025 but a REPRODUCTION Available. Last of the Genuine factory 4x Disc GM Proportioning Valves Till this last stock is sold only. Good alternatives are the reproduction PV's. For Firebirds & Trans Ams from 79 81, Carby or turbo.. with Factory Disc Brake rear end.. fits all the engine sizes, 301,400, 350, 80 Turbo & 403 etc. This is NOT for the Drum brake rear that one is listed elsewhere. What does a proportioning valve do? A
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