Fitment: This product fits 2008 - 2014 Subaru WRX, 2004 - 2021 Subaru STI, 2005 - 2009 Subaru Legacy GT, and 2004 - 2008 Subaru Forester XT. Note that it also fits 02 - 07 WRX with specific conditions: 2002 - 2005 WRX with 2.5L STI Oil Pan and 2006 - 2007 WRX with STI Oil Cooler and STI Oil Pan. Features: IAG Performance Equal Length Headers are a great way to boost your Subaru's performance. With a 4 - 2 - 1 configuration, equal - length tubing, and a merged collector, they improve turbo spool up by 300rpm. The free - flowing design enhances exhaust flow across the RPM range. Made of 304 stainless steel including cast stainless flanges, the headers have a 45mm pipe diameter for maximum flow. They also feature a slip - joint expansion section for heat - related flex and are fully TIG welded for strength. The equal - length design changes the exhaust tone to a smoother note. Each package includes an IAG 60mm uppipe with a 3 - bolt cast flange and multi - layer gasket to prevent leaks. All necessary hardware and high - quality gaskets are included, like specialty copper exhaust nuts that hold torque in extreme heat. What's in the box: (1) Equal Length Stainless Steel Header, (1) 3 Bolt Stainless Steel 60mm Uppipe, (1) 3 Bolt Uppipe Gasket, (3) Uppipe to Manifold Zinc Plated Bolts and Nuts, (5) Uppipe to Turbo Threaded Studs, (1) EGT Plug, (6) Copper Flange Nuts (Manifold to Head), (2) Manifold to Cylinder Head Gaskets, (1) Uppipe to Turbo Gasket.
Using this IAG header and uppipe is simple. First, make sure your Subaru model matches the fitment information provided. If you have a 02 - 07 WRX, double - check the additional requirements. During installation, use all the hardware and gaskets included in the box. The specialty copper exhaust nuts are designed to maintain torque, so make sure to use them properly. After installation, start your car and listen for any unusual noises or exhaust leaks. If you notice any issues, check the connections again. For maintenance, regularly inspect the headers and uppipe for signs of damage or corrosion. Since they are made of stainless steel, they are quite durable, but it's still a good idea to keep an eye on them. In areas with harsh weather or road conditions, you may want to clean the parts more frequently to prevent rust and debris build - up. When cleaning, use a mild soap and water solution and a soft cloth. Avoid using abrasive materials that could scratch the surface.
