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 Pictures or Part Numbers Below to Check Prices

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1. 994 Manifold. Fits 305 - 350 cu.in. GM Small Block V8 engines. Replaces Barr # CHV-1-83 and Marine Power # 0994-000. Use mounting kit 994-MK.

2. 994-MK Mounting Kit, manifold. Fits 994 manifold. Includes CV-GH gasket and mounting hardware.

3. CV-GH Gasket, manifold to cylinder head. Included in 994-MK mounting kit.

4. 99204 Riser, 4" outlet, 10º down angle. Replaces Barr # 20-0100. Use mounting kit 992-MK or 992-MK-FW.

5. 992 Riser, 3" outlet, 10º down angle. Replaces Barr # 20-0082. Use mounting kit 992-MK or 992-MK-FW.

6. 2018 Riser, 3" outlet, 30º down angle. Replaces Barr # 20-0102 and Indmar #'s 53-2009 and 53-2018.
Use mounting kit 992-MK or 992-MK-FW.

7. 9943S Spacer, 3". Fits FL994 manifold. Replaces Barr # 20-0097. Use mounting kit 992-MK or 992-MK-FW. Riser #’s 2018, 992 and 99204 will require their own mounting kit.

8. 992-MK Mounting Kit, riser and spacer. Open. Fits riser #’s 992, 99204, and 2018 and 994-S3 spacer. Includes 992-G open gasket and mounting hardware.

9. 992-G Gasket, riser. Open. Fits 992, 99204, and 2018 risers and 994-S3 spacer. Replaces Barr # 1-0107. Included in 992-MK mounting kit. 

10. 992-MK-FW Mounting Kit, riser. Blocked. Fits 992, 99204, and 2018 risers and 994-S3 spacer. Includes 992-G-FW blocked gasket and mounting hardware

11. 992-G-FW Gasket, riser. Blocked. Fits 992, 9920

12.F68C9 Water Fitting, 90º elbow. 3/4" MPT x 1" hose barb. 

13.F68CS Water Fitting, 90º elbow. 3/4" MPT x 1" hose barb. 

14.F66CS Water Fitting, straight. 3/4" MPT x 1" hose barb.

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