Sinister Diesel fuel filter cap for 2008–2010 Ford 6.4L Powerstroke is cataloged as a billet-style replacement for the factory plastic cap. Presented as a more durable option, the cap provides a finished appearance in the engine bay and is listed specifically for the 6.4L Powerstroke fuel filter application without asserting additional unsupported performance claims.
Sinister Diesel 08-10 Ford 6.4L Fuel Filter Cap