FordPartsGiant.com offers the wholesale prices for genuine 2019 Ford Police Interceptor Sedan parts. Parts like Alternator are shipped directly from authorized Ford dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS, 6 Cyl 3.7 L FLEX.