For 2011-2024 Ram 6.7L 3500 Diesel. For 2010 RAM 3500 PICKUP 6.7L L6. For 2011-2024 Ram 6.7L 2500 Diesel. For 2010 RAM 2500 PICKUP 6.7L L6. Easy to install:Without the OEM cap's rounded edges you can simply use a 1 1/8" socket wrench to remove your old cap and screw your new cap on its place.