MoparPartsGiant.com offers the wholesale prices for genuine 1991 Chrysler New Yorker Fifth Avenue parts. Parts like Crankshaft, Pistons And Torque Converter are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.0L, 6 Cyl 3.3L, 6 Cyl 3.8L. Transmission: 4-Speed Automatic Transmission.