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Direct Replacement Mercruiser V8 GM Big Block Center Rise Exhaust Manifold, MC-1-89011

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Product details

Management number 204559425 Release Date 2025/10/30 List Price $165.59 Model Number 204559425
Category

Quality built replacements for your rusty or cracked Mercruiser GM Big Block Center Rise Exhaust Marine Manifold (Part No. 89011A8) on your Mercruiser Engine with a Direct Replacement Chev Big Block Center Rise Exhaust Manifold, MC-1-89011. Barr has been building quality marine products since 1933. Manifolds by Barr are covered by a manufacturer's 3-year warranty. It is recommended that replacement manifolds be done in pairs and to also replace the risers and elbows at the same time.

Made in the USA

  • Replaces Mercruiser # 89011A8
  • Fits Mercruiser models 330, 340 and 454 magnum
  • For inboard and stern-drive units
  • Includes all mounting hardware, gaskets and plugs


Get back that new boat feel! Barr Manifolds are designed to reduce back-pressure and often when replacing OEM-installed manifolds, more horsepower is achieved.

When choosing a Manifold, it is recommended to also choose the appropriate new risers / elbows. Although Manifolds such as Barr, Osco and others including original equipment often look alike, it is recommended to buy manifolds and risers as sets. Where applicable, buy replacement manifolds in pairs and be sure to include the appropriate riser / elbow.

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