Volvo Penta GM SB Exhaust Manifold | Barr Marine VO-1-835804 Cast iron center rise exhaust manifold fits many Volvo Penta small block marine engines. Barr Volvo Penta exhaust manifold Fits Volvo Penta GM V8 small block engines with center rise manifolds For Volvo AQ200C thru F, 225C thru F, 255A thru F, 260A thru 260C, 271A, 280A, 290A, 290DP and 311A model engines Includes gaskets and mounting hardware Interchangable between port and starboard side Heavy duty cast iron Painted black Replaces Volvo Penta 835804 and 856883