366302R2 New Universal Tractor Engine Intake ValveOne New Aftermarket Replacement Intake Valve Fits International Harvester (IH) Fits FARMALL Tractors This aftermarket replacement engine intake valve Fits International Harvester (IH) and Fits FARMALL tractors equipped with the C123 and C135 4 cylinder gasoline engines. Four valves are required per engine. The valve seats at a 45 degree angle and controls airflow into the combustion chamber during the intake stroke. Specifications Head Diameter: 1. 50