The old worn down exhaust manifolds of your F150 3.5L EcoBoost aren't helping your performance, and their outlet bore doesn't even match your F150's turbine inlets. These F150 Ecoboost aftermarket exhaust manifolds improve exhaust outflow and feed a larger volume gas volume at a higher velocity through your F150's turbochargers so that your truck maximizes its horsepower and torque outputs. These manifolds bolt right into place of the stock manifolds, making them a straightforward F150 performance upgrade. Pair these exhaust manifolds with other accessories like the F150 eco-boost tuners and monitors or the F150 cat-back exhaust system. Ford F-150 Fitments: 2011, 2012, 2013, 2014 Ford F150 with 3.5L Ecoboost engines. Submodel Fitments: FX2, FX4, King Ranch, Lariat, Limited, Platinum, STX, XL, XLT. Some Exceptions apply, please see individual product pages for specific fitments.