GM Small Block Exhaust Manifold | Barr OMC-1-914035 The Barr OMC-1-914035 cast iron center rise exhaust manifold fits OMC & Volvo Penta 5.7L 350 CID marine engines. Barr OMC & Volvo Penta exhaust manifold Fits OMC and Volvo Penta GM 5.7L 350 cu. in. engines Includes gaskets and mounting hardware Interchangable between port and starboard side Original cast hose fitting is replaced by 1/2 in. NTP port Older models require 1/2 in. NPT x 1 in. hose fitting P/N 50-512-017 - sold separately Newer models use a 90 degree hose fitting P/N 3852538 - sold separately Heavy duty cast iron Painted black Direct replacement for OMC 914035 manifold Replacement for OMC 914035, 3852374, and 3857723 Replaces Volvo part number 3857723 and 3847501 Replaces Osco 57579 Comes with gaskets and mounting hardware