aFe POWER universal silicone coupling kit sized 4.00" x 3.75" ID with a 3" length. Built from 100% silicone and reinforced with three polyester layers, this coupling features a 4mm wall thickness for resilience and shape retention. Two included stainless steel clamps offer corrosion resistance and a tight seal. Suited for joining intake or boost plumbing where those ID sizes are required.
aFe POWER Universal Products Coupler Kit (4 x 3-3/4)in ID x 3in L - Black