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177 Fulford Dr.
Harkers Island, NC 28531
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Manifold End Plate, Rear, for Mercruiser


  • Part #: OSC54870

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End Plate for an Exhaust Manifold on a Mercruiser. It is a Plain End Plate and does not have a Hose Bib. It is used on some GM inline 6 engines, plus small block Ford & GM V-8 engines. The gasket for it is Osco # 48043. It will fit the following manifolds: Osco # 7234B, Osco # 7235B, Osco # 5603, Osco # 5604 manifolds & many 4 cyl. Applications without water fittings.
Replaces: Mercury Quicksilver # 54870; Barr # 1-54870; Sierra # 18-1912; Mallory # 9-40542Genuine  Osco  Parts

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