aFe Power’s new Twisted Steel header delivers more horsepower and torque while outflowing the factory exhaust manifold. The header is constructed of 14-gauge 409 SS tubing with a 1/2” thick head flange to ensure a leak free seal. To eliminate dead space that can cause turbulence and hindering flow that formed collectors are prone to produce, a true merged collector and optimized tube lengths are used for true pulse control technology improving flow and performance. 100% hand TIG-welded construction ensures optimal strength and durability. The smooth curves and increased diameter of this header helps remove restriction and keeps exhaust gas flowing smoothly for improved performance and durability on and off the trails. All components are supplied for a hassle-free installation with no modifications necessary. PartNumber : afe48-36005-HN Description : Twisted Steel Header; w/o Cats Tube Direction : Down Swept Port Shape : Round Application : Automotive Material : 304 Stainless Steel Coating/Finish : 304 Stainless Steel Engine Make/Size : Scion 2.0L Collector Tube Size (in.) : N/A Tube Size : N/A 2013-2015 Scion FR-S Base H4.1998cc Exhaust, Mufflers & Tips::Headers & Manifolds 2013-2015 Subaru BRZ Limited H4.1998cc Exhaust, Mufflers & Tips::Headers & Manifolds 2013-2015 Subaru BRZ Premium H4.1998cc Exhaust, Mufflers & Tips::Headers & Manifolds 2015 Subaru BRZ Series.Blue H4.1998cc Exhaust, Mufflers & Tips::Headers & Manifolds