This brake master cylinder is precision-engineered to match the design, function, and performance of the original master cylinder on specific vehicle years, makes and models. It is made of new, high-quality materials for a safe, durable replacement. Vehicle model years this part fits: Ford F-450 Super Duty: 2013, 2014, 2015, 2016 Ford F-550 Super Duty: 2013, 2014, 2015, 2016