T3 Undivided Header Manifold to T4 Turbocharger Inlet Flange Adapter Kit USA 1/2

T4 Inlet Bolt Spacing: 2.75" x 3.25" (70mm x 82mm). T3 Inlet Port Shape: Undivided Single Open Port. T3 Port Shape: Undivided Single Open Port. T3 Inet Bolt Spacing: 1.75" x 3.39" (44mm x 86mm). We will not skimp on material quality just to compete against imported steel.