Sinister Diesel Exhaust Fluid (DEF) Cap 11-16 Ford 6.7L Powerstroke BD-1047116 aFe has also designed a

aFe has also designed a large oil level sight glass with calibration plug set to the factory fluid level to eliminate overfilling

your truck's fuel system doesn't take advantage of this natural phenomenon

9L Cummins 305HP Engine: (+95HP +220 Lb-Ft)

For 2003-2004 models this is for automatic transmission trucks only and will only toggle to 1200 RPM

Sinister Diesel Exhaust Fluid (DEF) Cap 11-16 Ford 6.7L Powerstroke BD-1047116 aFe has also designed aNot 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.