DOES NOT FIT MUSTANG, ONLY F250 & F350 7.5L. 1994 1995 1996 1997 Ford F350 V8 7.5L ONLY. 1994 1995 1996 Ford F250 V8 7.5L ONLY. Suction Line. Is also referred to as the low-pressure vapor line. It connects the evaporator outlet to the compressor inlet.