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We supply NEW parts and specialize in locating obsolete, no-longer-available and back ordered parts. Browse our site to see just a few of the many parts we supply.  Call us or fill out the info form to receive a quote or to request information on parts not listed online.

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   Manifold Assembly. Fits 250 cu.in. GM in-line six cylinder engines equipped with Mercruiser riser #’s 76351, 76325, 60426, 49964, 76771 or 6042 (Osco)
Manifold Assembly. Fits 250 cu.in. GM in-line six cylinder engines equipped with Mercruiser riser #’s 76351, 76325, 60426, 49964, 76771 or 6042
Description: Manifold Assembly. Fits 250 cu.in. GM in-line six cylinder engines equipped with Mercruiser riser #’s 76351, 76325, 60426, 49964, 76771 or 60427. Includes items 1a through 1g and mounting hardware. Does not include manifold to cylinder head gasket. For
Base SKU: OSCMO618-63
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   Rear Plate. Fits MO618 series manifolds. (Osco)
Rear Plate. Fits MO618 series manifolds.
Description: Rear Plate. Fits MO618 series manifolds.
Base SKU: oscbwf
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   Water Fitting, plastic 90º. 3/4" MPT x 1" hose barb. (Osco)
Water Fitting, plastic 90º. 3/4
Description: Water Fitting, plastic 90º. 3/4" MPT x 1" hose barb. For Use on Osco manifolds
Base SKU: oscF68N9
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   Osco 6351 3" exhaust outlet, Replaces Mercruiser #’s 76351, 60426 and 49964 (Osco)
3
Description: Riser, 3" exhaust outlet, 90º down angle. For use in most inboard/outboard applications. Replaces Mercruiser #’s 76351, 60426 and 49964. Use mounting kit 6371-MK.
Base SKU: OSC6351
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   Osco Mercruiser Riser, 3" exhaust outlet, 0º down angle. (Osco)
Riser, 3
Description: Riser, 3" exhaust outlet, 0º down angle. For use in most inboard applications. Replaces Mercruiser #’s 76771 and 60427. Use mounting kit 6371-MK.
Base SKU: OSC6771
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   Front Plate. Fits MO618 series manifolds. (Osco)
Front Plate. Fits MO618 series manifolds.
Description: Front Plate. Fits MO618 series manifolds.
Base SKU: oscbws
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   Osco Riser Adapter. Adapts 6325, 6351, and 6771 risers to manifold (Osco)
Riser Adapter. Adapts 6325, 6351, and 6771 risers to manifold
Description: Riser Adapter. Adapts 6325, 6351, and 6771 risers to manifold MO618-63
Base SKU: OSCMO66351
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   GASKET END PLATE for MO618 manifolds (Osco)
GASKET END PLATE for MO618 manifolds
Description: Gasket, end plate. Fits BWS and BWF and plates.
Base SKU: OSCBG
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   Gasket, riser. Included in 6371-MK and 6325-MK mounting kits. (Osco)
Gasket, riser. Included in 6371-MK and 6325-MK mounting kits.
Description: Gasket, riser. Included in 6371-MK and 6325-MK mounting kits.
Base SKU: OSC52076
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   Mercruiser Osco 6325 RISER 3" exhaust outlet, 90º down angle.Replaces Mercruiser # 76325 (Osco)
RISER 3
Description: Riser, low profile, 3" exhaust outlet, 90º down angle. For use in inboard/outboard applications where height is a problem. Replaces Mercruiser # 76325. Use mounting kit # 6325-MK.
Base SKU: OSC6325
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   Mercruiser Osco Riser MOUNTING KIT for 6325 (Osco)
MOUNTING KIT
Description: Mounting Kit, riser. Fits 6325 riser. Includes 52076 gasket and mounting hardware.
Base SKU: OSC6325-MK
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   GASKET-RISER ADAPTOR (Osco)
GASKET-RISER ADAPTOR
Description: Gasket, riser adapter to manifold.
Base SKU: OSCMO618-G
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   Mercruiser Riser Mounting Kit, riser. Fits 6351 and 6771 risers. (Osco)
Mounting Kit, riser. Fits 6351 and 6771 risers. Includes 52076 gasket and mounting hardware.
Description: Mounting Kit, riser. Fits 6351 and 6771 risers. Includes 52076 gasket and mounting hardware.
Base SKU: OSC6371-MK
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   Gasket for 2 barrel Rochester carburetor. Studs measure 31/4" x 17/8" on centers. (Osco)
Gasket for 2 barrel Rochester carburetor. Studs measure 31/4
Description: Gasket for 2 barrel Rochester carburetor. Studs measure 3 1/4" x 17/8" on centers.
Base SKU: OSCCY-MG
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   Gasket, manifold to engine cylinder head. Replaces Mercruiser # 27-46401. (Osco)
Gasket, manifold to engine cylinder head. Replaces Mercruiser # 27-46401.
Description: Gasket, 6 cyl manifold to engine cylinder head. Replaces Mercruiser # 27-46401.OMC#907932
Base SKU: OSCCY6-GH
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