The aFe Magnum FORCE straight coupler fits 4" ID tubes with a 2" length and uses 2-ply reinforced high-temperature silicone for durability and flexibility. Standard stainless-steel worm-gear #060 clamps provide tight, corrosion-resistant joins while the sleeve accommodates expansion, movement and vibration common to truck, off-road and racing intake installations. This part is intended for non-pressurized intake systems.
aFe Magnum FORCE Intake Coupling Kit (4 IN ID x 2 IN L) Straight Coupler - Black