This aFe Magnum FORCE straight reducing coupler (3‑3/4" ID to 3‑1/2" ID x 3" L) is a high‑temperature, 1‑ply reinforced silicone reducer for joining mismatched intake or intercooler tubing. It includes stainless steel worm‑gear #056 and #060 clamps for corrosion resistance and secure clamping. Not for use on pressurized, supercharged, or turbocharged applications; allows expansion and vibration movement.
aFe Magnum FORCE (3-3/4in ID to 3-1/2in ID x 3in L) Straight Reducing Coupler - Black