Cast iron combination intake & exhaust manifold fits OMC & Volvo Penta 3.0L 4 cylinder marine engines. 3.0L 4 Cylinder Exhaust Manifold | BARR OMC-1-3858850 Barr OMC & Volvo Penta exhaust manifold For Volvo Penta and OMC GM 3.0L engines from 1994 and up Intake mounting flange designed for use with Holley 2 bbl carburetors Includes manifold, manifold to head mounting bolts and gasket, drain plug, and elbow gasket Heavy duty cast iron Painted black Replaces OMC 3858870, 3854045, 986985, 3857450, and 3858871 Replaces Volvo Penta 3858870, 3854045, 986985, 3857450, 3858871