Set of 6 honed Bosch nozzles rated at +300HP or 150% over stock 2007.5-2012. Nozzle has 8 holes with spray angle of 146* and dual plane. Nozzles are modified by Diesel Auto Power. DAP HP increase rating is based on the 07.5-12 injector. 2013 and newer trucks have nozzles that flow about 25HP/10% more than the 07.5-12. Cab and Chassis applications should run advanced timing to better approximate the 143* piston bowl found on that model. Washers and new connector tube o-rings are included. Professional installation of nozzles and testing on common rail test bench is highly recommended.