Improve the sound and performance on your Ford F-150 with premium headers from Stainless Power. Designed for the 2015-20 Ford F-150 5.0L these headers feature 1-7/8" primary tubes that are CNC mandrel bent to increase air flow and engineered to create power.; 2 year Warranty on Stainless Power; Smooth Mandrel Bends Optimize Exhaust Flow; Fully TIG Welded for Strength and Beauty; What's in the Box:; Driver x 1 and Passenger x1 Side Headers; 3" Elbow x 1; High Flow Cat x 2; Y Pipe x 1; 12" O2 Extension X 2 (Use on 2017 & Older); 24" O2 Extensions x 2 (Use On 2018 & Newer); These headers come with 3" collectors as well as high-flow catalytic converters that flow into either an x-pipe or y-pipe depending on the connection.; Welded Hanger x 1; Band Clamp x 6; Header Bolt Kit x 1; RTV Sealant x 1; Installation Instructions x 1; Stainless Power Header Kits are built from corrosion resistant 304 stainless steel our headers are TIG welded for strength and durability. We stand by our products with a 2 year warranty on material and craftsmanship.; Fitment:; Ford F-150 2WD/ 4WD 5.0L Supercab Supercrew or Regular Cab.; Features:; Factory Connection; High Flow Cats; 1-7/8"" Primary Tubes