aFe Magnum FORCE CAI Silicone Coupling Kit (4in. ID to 3.5in. ID) 2.75in L Straight Reducer - Black

The high temperature 1-Ply reinforced silicone hump reducer coupler is designed to connect to a (3-1/2" x 4")OD tube and is 3" long. Standard stainless steel worm-gear #052 & #060 clamps provides tight connections, durability and is corrosion resistance for industrial, commercial, truck, off-road and racing applications.