aFe Magnum FORCE Silicone Coupling Kit 4in ID x 2-1/2in L Straight Bellow-Coupler - Black

The high temperature injection molded silicone hump coupler is designed to connect to a 4"OD tube and is 3" long. Standard stainless steel worm-gear #060 clamps provides tight connections, durability, and is corrosion resistant for industrial, commercial, truck, off-road, and racing applications.