ARP 17-21 6.6L (L5P) GM Duramax Diesel Custom Age 625+ Head Stud Kit Fuel Delivery~Fuel Filters KC Stage 3 Turbo Fuel Injector Lines 50-74004 No Turbo size:Billet S472/83/.90
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ARP 17 21 6.6L (L5P) GM Duramax Diesel Custom Age 625+ Head Stud Kit Fuel Delivery~Fuel Filters KC Stage 3 Turbo Fuel Injector Lines 50 74004 No Turbo size:Billet S472 83 .90 KC Stage 3 Turbo Some years you will only run 2 mounting bolts instead of 3