1/4" Mounting Holes - 1" Apart Center to Center, R12 and R134a Compatible OEM Numbers 71R8321, RD-5-7015-1P Specifications TYPE O-Ring LIQUID INLET #6, 3/8" O-Ring LIQUID OUTLET TO EVAPORATOR #8, 1/2" O-Ring INLET FROM EVAPORATOR #10, 5/8" O-Ring OUTLET TO COMPRESSOR #10, 5/8" O-Ring TONAGE 2 SUPERHEAT RATING 8° F