*** THERE ARE TWO DIFFERENT GM DRIERS***
1) DRIER HAS THE SAME SIZE FITTINGS ON EACH SIDE.
2) DRIER HAS TWO DIFFERENT FITTINGS, CONDENSER SIDE IS LARGER. This drier was used on 944 different applications beginning in 1966 and ending in 1979
Please contact us if you are unsure about the drier. The fittings on this drier are the same size, the evaporator size is smaller than the condenser side. Drier can be used with R-12 or R-134a refrigerant.