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 Picture or Part Numbers Below to Check Price

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1.8125 Manifold. Fits 454 - 502 cu.in. GM big block V8 engines. Replaces Crusader# 98125.

2. 8125-MK Mounting Kit, Manifold. Fits 8125 manifold. Includes CW-GH gasket and mounting hardware.

3. CW-GH Gasket, manifold to cylinder head. Included in 8125-MK. Replaces Crusader # 96653.

4. 9015*.Riser, 4" exhaust outlet, 10o down angle. Replaces Crusader #'s RO29015 and 98126. See Note Above*.Use mounting kit 9015-MK.

5. 9015-MK Mounting Kit, riser. Fits 9015 riser. Includes 9015-G gasket and mounting hardware.

6. 9015-G Gasket, riser. Included in 9015-MK. Replaces Crusader # 98127.

7. 8128 Spacer, 4". Replaces Crusader # 98128. Use mounting kit 8128-MK.

8. 8128-MK Mounting Kit, spacer. Mounts the 8128 spacer to the 8243 manifold. Includes (2) 9015-G gaskets and mounting hardware. The 9015 riser will require its own mounting kit.

9. 8124 Stainless Plate, block-off. Replaces Crusader # 98124. Requires (2) 9015-G gaskets per plate.

10. 7854  Water Fitting, 90º elbow. 1" MPT x 11/4" hose barb. Replaces Crusader # 97854. (1) required for a raw water cooled manifold and (2) required for a fresh water cooled manifold.

11. F68CS Water Fitting, Straight. 3/4" MPT x 1” hose barb. Replaces Crusader # 97911. For risers / elbows.
 

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