The stock transmission pan on your 6.7L Super Duty isn't very large and isn't the most effective thing in the world at dissipating heat. Aftermarket transmission pans for the 2011-2016 F250 & F350 6.7L Powerstrokes have larger oil capacities, cooling fins, and other features that help you keep your Super Duty's transmission temperatures under control, even when towing or hauling heavy loads. Ford Super Duty Fitments: 2011, 2012, 2013, 2014, 2015, 2016 Ford F250 & F350 6.7L Submodel Fitments: FX4, King Ranch, Platinum, Lariat, XLT, XL Some Exceptions apply, please see individual product pages for specific fitments.