K&N Hose 3.75inid X 1.75inl Reinforced

K&N rubber hose couplers are designed to connect intake tubes for custom do-it-yourself racing air intake applications or used as a replacement part. K&N couplers are constructed from high-quality reinforced rubber and made to last. This coupler connects two 3-3/4 inch tubes and is 1-3/4 inches in length.