MoparPartsGiant.com offers the wholesale prices for genuine 1987 Dodge Grand Caravan parts. Parts like Pinion & Adapter - Speedometer Cable Drive are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 2.2L, 4 Cyl 2.5L, 4 Cyl 2.6L, 6 Cyl 3.0L. Transmission: 5-Speed Manual Transmission, Automatic Transmission.