The Police Interceptor package for the Ford Crown Victoria was produced from 1992 to 2011 and included several modifications, including an oil cooler, an engine calibration modification, stiffer shock absorbers and a heavy-duty body. Features vary based on the model year.
The oil cooler keeps the engine from overheating when operating at a high rpm, and the transmission in the Police Interceptor was designed for harder shifting. The 1993-2005 Police Interceptors had aluminum metal matrix composite drive shafts that allowed the cars to drive safely at speeds exceeding 150 miles per hour. The 2006-2011 model years were electronically limited to 140 miles per hour, whereas civilian models were limited to 110 miles per hour.
The engine was a 4.6-liter V8. There were two gear ratios for the Police Interceptor, one designed for highway use and the other designed for city use. Police Interceptors had a reinforced frame and, except in the Street Appearance Package models, had a badge that read "Police Interceptor" in place of the standard "Crown Victoria." They had a dual exhaust and a speedometer measuring up to 140 miles per hour. The successor to the Crown Victoria Police Interceptor was a Police Interceptor based on the Ford Taurus.