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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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   Mercruiser 6 cyl inline Manifold Osco MO618-55 160hp (Osco)
Mercruiser 6 cyl inline MANIFOLD *
Description: Manifold Assembly. Fits 250 cu.in. GM in-line six cylinder engines equipped with Mercruiser riser#’s 39920 or 55538. Includes items 1a through 1g and mounting hardware. Does not include manifold to cylinder head gasket.
Base SKU: OSCMO618-55
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   RISER MERCRUISER #55538 (Osco)
RISER MERCRUISER #55538
Description: Riser, 21/2" exhaust outlet, 90º down angle. Fits early Mercruiser applications. Replaces Mercruiser #’s 39920 and 55538. Use mounting kit 5538-MK.
Base SKU: OSC5538
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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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   Riser Adapter. Adapts 5538 riser to MO618 manifold. (Osco)
Riser Adapter. Adapts 5538 riser to MO618 manifold.
Description: Riser Adapter. Adapts 5538 riser to manifold.
Base SKU: OSCMO65538
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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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   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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   GASKET (Osco)
GASKET
Description: Gasket, riser. Fits 5538 riser. Included in 5538-MK mounting kit. Replaces Mercruiser # 27-39915.
Base SKU: OSC5538-G
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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 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-RISER ADAPTOR (Osco)
GASKET-RISER ADAPTOR
Description: Gasket, riser adapter to manifold.
Base SKU: OSCMO618-G
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   MOUNTING KIT Riser 5538 (Osco)
MOUNTING KIT
Description: Mounting Kit, riser. Fits 5538 riser. Includes 5538-G gasket and mounting hardware
Base SKU: OSC5538-MK
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