OMC / Volvo 305-350 Osco Marine Manifolds
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.
All manifolds come with a 3 year warranty and DO NOT include gaskets. Order gaskets and bolts separately. We stock all OSCO manifolds and ship the same day.
Click on Images or part Numbers below to Check Prices

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1. 52374 Manifold. Fits 305 - 350 cu.in. GM small block V8 Engines. Includes hose cap and clamp. Replaces OMC #’s 914035, 3852374 and VOLVO part # 3852374-2. Fits both sides of engine. Use mounting kit 244-MK.

1a.2229*Hose Cap, 1" ID. Replaces OMC #’s 909829, 3850476, and 3852476. Use one per manifold.

1b.C16* Hose Clamp, stainless steel. Fits 2229 hose cap. Replaces OMC #’s 912627, 385780,and 3852692.

2. 244-MK.Mounting Kit, manifold. Fits 2441 and 2442 manifolds. Includes CV-GH gasket and mounting hardware.

3. CV-GH Gasket, manifold to cylinder head. Included in 244-MK. Replaces OMC #’s 909314 and 3852468.

4. 50456 Riser, 4” exhaust outlet, 7º down angle. Fits Ford and GM V8 center riser style manifolds. Osco does not offer a manifold for OMC Ford applications. Replaces OMC #’s 913784, 3855270 and 3850456.

5. 50456-MK Mounting Kit, riser. Fits 50456 riser. Includes 50456-G gasket and mounting hardware.

6. 50456-G Gasket, riser to manifold. Included in 50456-MK. Replaces OMC # 913783.
 

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Please Remember we stock parts and accessories for all makes and models of marine engines and boats. These catalog pages represent just a few of the parts we stock. Use the search field on the right to search by part the Part Number with the abbreviation at the bottom of each page. If you do not find what you are looking for please fill out the info form and we will find the parts you need and respond with a quote.