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.
Magnum FORCE Cold Air Intake System Spare Parts Kit (4 IN ID to 3-1/2 IN ID x 2-3/4 IN L) Straight Reducing Coupler – Black
(4 IN ID to 3-1/2 IN ID x 2-3/4 IN L) Straight Reducing Coupler – Black