Have you ever heard of “Bulletproof 6.0 Powerstroke diesel kit”, "Bulletproof truck", or "Bulletproof Ford 6.0L Engine"? Unfortunately “Bulletproof” is ambiguous with no clear definition. The term Bulletproof originates from Bulletproof Diesel, a parts and service shop in Mesa, Arizona. Bulletproof Diesel became famous for making aftermarket Exhaust Gas Recirculation coolers for Powerstroke 6.0L Diesels. They have since added aftermarket oil coolers, water pumps, fuel injection control modules (FICMs), and other aftermarket parts. For more information on Bulletproof 6.0, visit our website at https://puredieselpower.com/