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 : afe48-36103 Description : Twisted Steel Header; 1 5/8 in. 16 Gauge 304 Stainless Steel Tubing; 3-to-1 Formed Collectors; Application : Automotive Port Shape : Rectangle Collector Tube Size (in.) : N/A Engine Make/Size : Nissan 3.5L Material : 304 Stainless Steel Coating/Finish : 304 Stainless Steel Tube Size : 1.625 Tube Direction : Down Swept 2003-2006 Infiniti G35 Base V6.3498cc Exhaust, Mufflers & Tips::Headers & Manifolds 2004-2006 Infiniti G35 X V6.3498cc Exhaust, Mufflers & Tips::Headers & Manifolds 2005 Nissan 350Z 35th Anniversary Edition V6.3498cc Exhaust, Mufflers & Tips::Headers & Manifolds 2003-2006 Nissan 350Z Base V6.3498cc Exhaust, Mufflers & Tips::Headers & Manifolds 2003-2006 Nissan 350Z Enthusiast V6.3498cc Exhaust, Mufflers & Tips::Headers & Manifolds 2005-2006 Nissan 350Z Grand Touring V6.3498cc Exhaust, Mufflers & Tips::Headers & Manifolds 2003-2005 Nissan 350Z Performance V6.3498cc Exhaust, Mufflers & Tips::Headers & Manifolds 2003-2006 Nissan 350Z Touring V6.3498cc Exhaust, Mufflers & Tips::Headers & Manifolds 2003-2006 Nissan 350Z Track V6.3498cc Exhaust, Mufflers & Tips::Headers & Manifolds