Factory OE Style High Side R-134a Primary Seal A/C Port Fittings w/ replaceable valve cores. Brand new professional R - 134a aluminum high side primary a/c fittings. These high side fittings replace the factory ball valve fittings. Many times when you remove the high side coupler while servicing an a/c system the high side ball valve will leak refrigerant. These high side valves come with a shrader valve instead of the factory ball valve which eliminates this problem. These fittings have a m12 x 1.5 thread and fit Chrysler, Ford , GM vehicles.