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.
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1.7992 Manifold, starboard. Fits 454 cu.in. GM big block V8 engines. Replaces Crusader # 97992 and 97114*.

1.7993 Manifold, port. Fits 454 cu.in. GM big block V8 engines. Replaces Crusader #97993 and 97115*.

2. 799-MK Mounting Kit, manifold. Fits 7992 / 7993 manifolds. Includes CW-GH gasket and mounting hardware.

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

4. 7772 Riser, 4". Replaces Crusader # 97772. Use mounting kit 7772-MK.

5. 7772-MK Mounting Kit, riser. Fits 7772 riser. Includes 6108 gasket and mounting hardware.

6. 7169 Riser, 8". Replaces Crusader # 97169. Use mounting kit 7169-MK.

7. 7169-MK Mounting Kit, riser. Fits 7169 riser. Includes 6108 gasket and mounting hardware.

8. 6108 Gasket, riser, 3 holes for water. Used at manifold with risers 7772 and 7169. Included in 7169-MK and 7772-MK.Replaces Crusader # 96108. Tech tips page 75 and 79.

9. NWK Nut and Washer Kit. 4 each sealing washer and locking nuts. Replace after each removal.

10. 7924 Elbow, 4" outlet. Replaces Crusader # 97924. Use mounting kit 6562-MK.

11. 8068 Elbow, 3" outlet. Replaces Crusader # 98068. Use mounting kit 6562-MK

12. 7386 Elbow, jacketed upper for swivel. Replaces Crusader # 97386. Use mounting kit 6562-MK.

13. 6562-MK Mounting Kit, elbow. Fits 7924, 8068, and 7386. Includes 6562 gasket and mounting hardware.

14. 6562 Gasket, elbow, 1 hole for water. Used with elbows 7924, 8068 and 7386. Included in 6562-MK. Replaces Crusader # 96562. Tech tips page 75 and 79..

15. 7387 Elbow, lower swivel with 3" outlet. Replaces Crusader # 97387.

16. 7624 Elbow, lower swivel with 4" outlet. Replaces Crusader # 97624.

17. 7296 Stainless Plate, block off. Separates fresh water from raw water. Requires 1 plate and (2) 6562 or 6108 gaskets per manifold. Replaces Crusader # 97296. Tech tips page 75 and 79.

18. 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.

19. F68CS Water Fitting, straight. 3/4" MPT X 1” hose barb. Replaces Crusader # 97911. For risers / elbows.

*Requires one water fitting 7854 per hose connection.
 

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