GT2860R/GT28R/GT2871R/GT2854R Downpipe Turbo Flange is pocketed to allow for internal wastegate exhaust flow to reach downpipe ensuring rerouting of the exhaust gases. The downpipe flange is 3/4" thick to allow for maximum airlfow and prevent warping under high loads and temps. The flange has an 2.5" ID to allow for easy fabrication of exhaust tubing for the project. Make of high quality light weight cast mild steel.and CNC-machined. Notes: Item exactly the same as picture shown. Item Includes: 1 x steel flange Application :Fits all GT28R GT2860R GT2871R TB28 Turbocharge NOTE : Please Use The Dimensions Listed To Check Your Sizes. NOTE : This Gasket Replaces The Standard Part And Will Last Longer Under Harder Driving Conditions Than Stock Gaskets. ** IMPORTANT INFORMATION ** Please double check the item size in our photo and description, if you bought the wrong size, we'll not responsible for the mistake, please kindly be noted, thanks. Minor modifications or adjustments maybe needed for some of our products. All items are Brand New unless stated otherwise on the listing. We sell DIY (Do It Yourself) Items with a few exceptions. Professional Installer Is Highly Recommend, No Installation Instruction Included.YiPin