Kooks Headers Stage 8 Header Bolt Kit - Bolts in Both Thread Sizes and Locking Hardware.

Fitment: 2011-2014 Ford F-150 Platinum 5.0L V8, 2011-2014 Ford F-150 STX 5.0L V8, 2011-2014 Ford F-150 XL 5.0L V8, 2011-2014 Ford F-150 FX4 5.0L V8, 2011-2014 Ford F-150 FX2 5.0L V8, 2011-2014 Ford F-150 Lariat 5.0L V8, 2011-2014 Ford F-150 King Ranch 5.0L V8, 2011-2014 Ford F-150 XLT 5.0L V8, 2011-2014 Ford Mustang GT 5.0L V8, 2012-2013 Ford Mustang Boss 302 5.0L V8