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Manifold Exhaust Marine for Mercruiser GM 454 7.4L 502 8.2L V8 89011


  • Part #: HGE9011

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Exhaust Manifold for Mercruiser Big Block 7.4L 454 applications. This center riser Exhaust Manifold was used on GM Big Block Engines From 1983 & up. It uses Riser Osco # 8503A for the 3.0", and Osco # 4354 for the 4.0". Also, the mounting kit is Osco # 9011-MK.

Replaces: Mercury Quicksilver #s: 807078A6, 89011A8; Barr # MC-1-89011; GLM # 51240; Sierra # 18-1957-1; Mallory # 9-40506

Osco Manifolds and Risers come with a 3-year limited warranty (PDF)!

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