Intake Manifold Heat Shields by Heatshield Products are an easy way to lower intake manifold temperatures and gain easy horsepower! Intake Manifold Heat Shields by Heatshield Products can increase horsepower by as much as 12 horsepower by shielding the intake manifold and reducing radiant heat from the engine below. Intake Manifold Heat Shields by Heatshield Products install fairly easil. Simply degrease and clean the manifold surface, wipe with alcohol, let dry, then firmly press the heat shield onto the underside of the manifold. Use provided edging tape to finish the install. The part number for this Intake Manifold Heat Shields by Heatshield Products is 140008 and it fits stock Intake manifolds on 2011-2014 Ford Mustang (5.0 BOSS V8 Models) (ONLY Fits BOSS Models)