The aFe Magnum FORCE 4-1/8 in ID x 3 in straight hump coupler is a high-temperature, 1-ply reinforced silicone connector made to join to a 4-1/8" OD tube. It includes stainless steel worm-gear #064 clamps for a secure, corrosion-resistant seal and allows expansion, movement and vibration. Not for use on pressurized or supercharged/turbocharged sides; commonly used as a spare on aFe POWER cold air intake systems.
aFe Magnum FORCE Intake Coupling Kit (4-1/8 IN ID x 3 IN L) Straight Coupler - Black