aFe Magnum FORCE CAI Univ. Silicone Coupling Kit (4 1/4in. ID to 3.00in. L) Straight Reducer

The high temperature injection molded silicone bellow coupler is designed to connect to a 4-1/4"OD tube and is 3" long. Standard stainless steel worm-gear #072 clamps provides tight connections, durability, and is corrosion resistant for industrial, commercial, truck, off-road, and racing applications.