Shorty Headers2011-2017 Ford F-1505.0L Coyote1-3/4" Primary TubeMild SteelHigh-Temp Black Paint FinishCARB EO Number: D-115-28 Features:Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increased exhaust velocityHeavy-duty 16-gauge tubing for increased strength and durabilitySmooth transition, 1.750 in. diameter primary tubes are used for increased exhaust flow increasing performance, and improving throttle responseMachined 3/8 in. header flanges for a leak-free seal and maximum strengthPremium aluminum header gaskets includedEmissions Note:This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled).