aFe Magnum FORCE CAI Univ. Silicone Coupling Kit (3.875in. ID / 2.25in. L) Straight Coupler w/Hump

The high temperature 1-Ply reinforced silicone hump coupler is designed to connect to a 3-7/8" "OD tube and is 2-1/4" 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.