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Volvo 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. We also stock original Volvo manifolds for all makes and models.
Volvo OMC Center Rise Manifold. Fits 305 - 350 Fits 2.3 and 2.5 liter Volvo four cylinder. Replaces Volvo #’s 855387-7 and 834438-4

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

     Osco Manifold Volvo Four Cylinder Aq 120/140 B20 & 2.3 and 2.5 Liter-855387-7 & 834438-4

     Osco Volvo GM Small Block V8 305 - 350

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