Exhaust Manifold Collector Ask Seller a Question Stainless Steel 1.75" (45mm) 3 into 1 Manifold/Downpipe Collector IDEAL FOR BUILING YOUR OWN EXHAUST SYSTEM /MANIFOLD WITH THREE 1 3/4" INLETS PERFECTLY SHAPED FOR THREE TUBES TO SLIDE IN IN LEAVING BEHIND A SMALL CAVITY WHICH IS IDEAL FOR WELDING THE TUBES INTO PLACE. Material: T304 Stainless Steel Inlet Diameter on Collector Side (I.D): 1 3/4" (45mm) (Accepts 3 Pipes) Outlet Inner Diameter (I.D): 55mm Please Visit Our eBay Store for a Wide range of TOP QUALITY Parts! Please note that since January 4th, any purchases made from customers outside United Kingdom are like to get charged and import tax / duty by your Customs. Please check the tax charge in your country before making a purchase. Buyer / recipient is responsible for any extra char.