USP Marine Tuning High-Flow Boost Pipe Kit for Mercury Verado 350-400

The factory boost pipe is constructed of plastic and is extremely narrow resulting in an airflow restriction. The USP Marine pipe is constructed out of mandrel bent 2.5" aluminum tubing with 4 ply stepped silicone couplers. We also included the damage-prone factory replacement coupler, connecting boost valve to the intake manifold. We have seen countless factory couplers damaged and causing pesky boost leaks that are very hard to diagnose. By utilizing the boost pipe kit and included coupler, the kit will allow for maximum airflow and that extra insurance policy knowing you will never have a leak. The piping is powder coated with a wrinkle black durable finish for an OEM+ look. This is a direct replacement for OEM Part #'s (8M0095505, 8M0095507, 8M0095506, 887938003) Fits The Following Engines: Increased Airflow +10% CFM Durable mandrel bent tubing Reduced Restriction Replaces factory damage-prone rubber design 316 Stainless clamps 4 Ply Silicone Construction Fitment Mercury Verado L6 350 Mercury Verado L6 400M Mercury Verado L6 400R