USP Marine Tuning MAX+ Forced Air Duct For Mercury V8 Engine Family

USP Marine MAX+ Performance Forced Air Duct (Mercury V8) Eliminate exhaust reversion and unlock maximum airflow. Stop losing power to dirty air. The USP Marine MAX+ Performance Forced Air Duct is engineered to solve a common issue in Mercury V8 engines known as the “station wagon effect,” where exhaust fumes are pulled back into the intake through the rear of the cowling. This results in power loss, reduced top-end speed, and increased fuel consumption. The MAX+ duct fixes this by channeling clean, high-pressure ram air from the top of the cowling, pushing exhaust fumes away from the intake where they belong. Performance Benefits Over 50% increase in ram air intake Lower intake air temperatures Improved efficiency and engine performance Gain/retain speeds at wide open throttle Even greater gains on boats running 100+ MPH Designed for Mercury V8 Models 500R (primary design focus) 450R 300R Each duct is developed using advanced 3D scanning technology to ensure precise fitment to the factory cowling. Built for Marine Performance Made in the USA Motorsports-inspired design Durable construction Fiberglass with gel coat finish Designed to withstand harsh marine environments Real-World Performance With over 20 years of experience in forced induction performance, we understand how critical clean, cool airflow is. The MAX+ duct significantly reduces intake air temperatures and improves consistency under load, especially during wide open throttle in warm conditions. Installation Includes 3M 4000 marine adhesive Secure and permanent installation No complex modifications required Why USP Marine Fast shipping from Florida Built by experienced performance professionals Reliable customer support Summary The USP Marine MAX+ Forced Air Duct is a performance-driven upgrade designed to correct a known airflow issue in Mercury V8 engines. By delivering clean, high-pressure air to the intake, it improves power, efficiency, and overall engine performance while adding an aggressive, motorsports-inspired look. Fits The Following Engines: Mercury 250 V8 Mercury 300 V8 CMS Mercury 300 V8 Verado Mercury 300R Mercury 450R Mercury 500R Highlights: Increased Airflow by 50% over stock cowling Larger gains on 100+ MPH boats! Blocks Exhaust fumes from intake duct "station wagon effect" Includes tube of 3m 4000 for install Surface prepped with an adhesion promoter type of primer for ease of paint applications or further prime coating. Race-inspired F1 profile design for an aggressive look that follows the OE cowling lines better than anything available Fitment like a Lego piece! Air being forced into the engine is Non-consensual :)