Universal, Engine Air Intake Tubing Coupler, 90 Degree Reducer Elbow, 3.50" I.D. x 2.50" I.D. x 4.00" Leg Length - Black, 90 Degree Reducer Elbow, 3.50" I.D. x 2.50" I.D. x 4.00" Leg Length - Black, SILICONE REDUCER, Silicone Products, 2.5"x3.5"90DegSilTrn.