The aFe Magnum FORCE 3-1/8 in ID x 4 in straight hump coupler is a 2-ply reinforced silicone connector built to mate with 3-1/8" OD tubes. It includes stainless steel #048 worm-gear clamps for tight, corrosion-resistant seals and its hump profile helps accommodate misalignment, movement and vibration. Not for use on pressurized or forced-induction sides; commonly used as a replacement part for aFe POWER cold air intakes.
aFe Magnum FORCE Intake Coupling Kit (3-1/8 IN ID x 4 IN L) Straight Coupler w/ Hump - Black