MoparPartsGiant.com offers the wholesale prices for genuine 1999 Dodge Durango parts. Parts like Leak Detection Pump 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.