This bottom mount cast iron turbo manifold for the E36 E46 6-Cylinder engines including M50/M52/S50/S52. Turbo flange fits for T3 T3/T4 type turbos. Wastegate flange fits Tial/Turbosmart style wastegates 35mm-38mm.
Features correctly shaped ports and has a nice open plenum for clean flow to the turbo. Cast iron is not prone to cracking like a fabricated header.