Ford DKS-17DS, FS18, FS20 Suction and Discharge Block Fittings. These blocks fit the compressor in the 2011-2017 Ford 5.0L Coyote Engine. These blocks fit the FS18 and FS20 compressors found on 2010 and later Ford Trucks with the V8 engines. #8 3/4" Discharge and #10 7/8" Suction Fittings