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OMC Marine exhaust manifolds, risers, elbows
Osco Manifolds and Risers Since 1932


OSCO Motors Co. has been in the business of providing boaters with a high quality, reasonable cost alternative to original manufacturer's equipment. OSCO’s marine exhaust systems are made in the USA with pride. We deal directly with the most skilled iron foundries in the USA. All design, machining and processing is done at OSCO’s manufacturing facility in Hatfield, Pennsylvania
Volvo OMC Center Rise Manifold. Fits 305 - 350, starboard. Fits 305 - 350 GM small block V8 Engines. Includes hose cap and clamp. Replaces OMC #’s 909280 and 912441

     OMC / VOLVO Osco 52374 Manifolds GM Small Block V8 305 - 350

     OMC Manifolds Osco GM Small Block V8 1979-89 305 -350 912441

     OMC Osco Manifolds GM In-Line Six Cylinder Model 160 250 Cu In

     OMC Risers for Ford and GM

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