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Cast Iron Vortec 5.7L V8 Marine Intake Manifold – Universal 4-Barrel Carburetor Mounting – CNC Machined for Precise Fit – Saltwater Corrosion Resistant – Fits 1996 & Up Engines

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$269.99

$ 99 .00 $99.00

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  • Compatible with V8 5.0/ 5.7L Marine Engines: Specifically designed for marine engines from 1996 and up, ensuring a precise fit for Vortec 5.7L marine applications.
  • Universal 4-Barrel Carburetor Mounting: Supports universal 4BBL carburetors for increased flexibility, including compatibility with various performance brands without the need for adaptors.
  • Durable Cast Iron Construction: Made from high-grade cast iron to resist saltwater corrosion and other harsh marine conditions, outperforming aluminum alternatives.
  • Enhanced Airflow Design: Features a superior runner finish to increase airflow, improving overall engine performance and efficiency in marine environments.
  • CNC Machined for Precision: Pre-threaded mounting holes and accessory ports, CNC machined for exact fit and bolt hole alignment, making installation straightforward and hassle-free.
  • Engineered for Long-Lasting Performance – Designed to withstand the demands of marine engines, ensuring durability and reliability over time.
  • EngineQuest: Over 75 Years of U.S. Automotive Expertise – Designed in the USA with Top-Quality Control. Proud IMCA/WISSOTA Supporter. Backed by a 1-Year Parts & Labor Warranty.


Enhance your marine engine with this high-quality Cast Iron Vortec 5.0/5.7L V8 Marine Intake Manifold, designed for marine use from 1996 and newer models. This intake manifold delivers excellent performance, featuring universal 4-barrel carburetor mounting to accommodate a variety of carburetor brands without needing adaptors. Built for durability, it’s made from high-grade cast iron, providing outstanding resistance to saltwater corrosion and offering superior longevity compared to aluminum alternatives in challenging marine conditions. The CNC-machined construction ensures a precise fit and perfect alignment of bolt holes, making installation straightforward. Ideal for 5.0/5.7L V8 Vortec engines, this manifold boosts airflow with its optimized runner design, enhancing overall engine performance. Equipped with pre-threaded accessory ports and mounting holes, this intake manifold is ready for installation, delivering reliable, long-lasting performance. Engine Quest produces high-quality OE-style replacement parts. Each part undergoes rigorous testing and inspections to meet EngineQuest’s exact specifications. Designed for precision manufacturing and durability, our products ensure easy installation. With nearly 500 SKUs available, the company specializes in hard-to-find, in-demand parts, including those no longer available from the OEM, difficult to salvage, or with prohibitively high OEM costs.