MoparPartsGiant.com offers the wholesale prices for genuine 1988 Dodge Ram Van parts. Parts like Compressor, Air Conditioning are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.9L, 8 Cyl 5.2L, 8 Cyl 5.9L. Transmission: 4-Speed Automatic Transmission, 5-Speed Manual Transmission, Automatic Transmission.