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MASTER DISTRIBUTOR FOR OSCO MANIFOLDS
OSCO REPLACEMENTS FOR OMC AND VOLVO
V8 MANIFOLD & RISER
These OSCO Manifolds and Risers are direct replacements for original OMC equipment used on small block Chevy engines with center riser equipment, from 1989 to today. The riser can also be used on other OMC engines with center riser equipment, i.e. Ford small block and big block, and Chevy V6 and big block. These manifolds and risers will also replace Volvo center riser equipment used from 1994 to today.

RISER Part No. 50456. Replaces OMC part #'s 913784, 3850456 and Volvo part
#3855270-9, etc.
MOUNTING KIT Part No. 50456-MK. Includes #50456-G gasket and mounting bolts.
GASKET Part No. 50456-G. Replaces OMC part #913783 and Volvo part #3850496-5.
MANIFOLD Part No. 52374. Replaces OMC part #'s 914035, 3852374 and
Volvo part #3852374-2, etc. Includes hose cap and clamp.
MOUNTING KIT Part No. 244-MK. Includes manifold to head gasket and mounting bolts.
GASKET Part No. CV-GH. Manifold to head gasket.
HOSE CAP Part No. 2229. 1" ID hose cap for above manifold.
Holt Corporation
P.O. Box 1249 - 20 Thresher Street
(Route 1)
Saugus, MA 01906
1-800-225-4484 Fax:(781)-231-3856
Email: stew@holtcorp.com
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