Volvo 740, 940 exhaust manifold for B200, B230 8-valve cover exhaust port shapes: Pipe shape made to fit Volvo 740, 940 Cylinders 1-4 and 2-3 together and collector 2.5" Inner diameter of primary pipes: 42 mm Inner diameter of secondary pipes: 48 mm The output of the collector is 2.5" The output is for a 2.5" exhaust pipe The exhaust system must be at least 2.5" overall to provide good torque to the engine.
