The stock converter of your 2011-2019 F250 or F350 6.7L can't handle the horsepower and torque that's easily in the reach of your mighty Powerstroke Super Duty, and if you're going to push out huge power, you'll need an upgrade. These aftermarket torque converters can handle much higher levels of power and torque than stock and can even get your Super Duty cleaner and meaner transmission function while they're at it. Ford Super Duty Fitments: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 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.