Black Widow Y-Pipe 3 �single/3 � dual3 in. Diameter Inlet Outlet BW0015 33 Features: Ideal for dual downpipes into a single inlet muffler or a single outlet muffler into dual tailpipes 5. 500 in. center to center dual outlet measurement Mandrel bent for a smooth transition Can be welded or clamped on for installation Brand: Black Widow Exhaust Manufacturer's Part Number: BW0015 33 Part Type: Exhaust Crossover Pipes Product Line: Black Widow Exhaust Y Pipes UPC: 850027996431 Pipe Style: Y