Stainless Racing Manifold Header Exhaust The Stainless Racing Manifold Header Exhaust For 01-05 HONDA CIVIC DX/LX D17 1.7 EM2/ES1 is a great option for making the most of your engine. It's designed to be sturdy and to last a long time, so you won't need to replace it as soon as you get a new engine. Specifications: Made of High Quality T304 Stainless Steel Material Dyno Approved: Increase High Flow Air, Instantly Gain 15 -20 Hp. / Tq. TIG Welded CNC Machine Flange Inlet/ Outlet: 1.50"/ 2.00" O2 Sensor and EGR Bung Insertion and Metal Gasket Included 100% Brand New Professional Installation is Highly Recommended (No Instruction Included) Package Includes: 1 X Set of Header Exhaust System Hardware, such as Gasket(s) if Any is Shown in the Picture Above Fitment: For Honda Civic 01-05 Do Not Fit EX & Si Models 100% Brand New Professional Installation is Highly Recommended Installation Instruction is NOT Included FREE SHIPPING: Note, due to very high demand, please allow 1-4 weeks for delivery. On variations of two or more items, the product may be sent in separate packages.