aFe Cold Air Intake System Silicone Coupler, 3-3/4 IN ID to 3-1/2 IN ID x 90 Deg. Elbow (59-00121) 1539 BMW M2 / M235I /

BMW M2 / M235I / M135I

you can easily take your BMW M4 from that stock

turbo outlet pipe

The specially designed heat shield is sealed to the hood of the vehicle to prevent radiant heat from entering the engine while allowing the sound of the turbocharged V6 engine to be heard under heavy throttle

aFe Cold Air Intake System Silicone Coupler, 3-3/4 IN ID to 3-1/2 IN ID x 90 Deg. Elbow (59-00121) 1539 BMW M2 / M235I /3 3 4" to 3 1 2" Internal Diameter: This coupling features a 90degree angle and is designed to connect to tubes with a 3 3 4" and 3 1 2" diameter. It's commonly used on aFe POWER cold air intake systems, but can be used for a variety of projects. Silicone Construction: Its silicone construction features a layer of polyester reinforcement, making it extremely durable and less prone to deformation, tearing, and other damage, than average couplings.