Not to be negative, but this will not add horsepower to your truck… but it is more durable, lasts longer and looks better than the stock exhaust fluid cap on your Powerstroke!
The Sinister Diesel DEF cap for the 6.7L Powerstroke is a stylish and durable alternative to the stock Diesel Exhaust Fluid cap. The cap is CNC machined from solid billet T6-6061 aluminum, and finished in the signature Sinister Blue.