Compatibility: Compatible with International Harvester Farmall M and MV tractors; Compatible with International Harvester O6 and OS6 tractors; Compatible with International Harvester W6 tractors. Replacement Parts: 50983DB, 50983DC, 50983DD, 47387C, 47387D, 47387DB, 50983D. Precision Engineering: Mounting studs measure 2 11/16 inch center to center. Throttle body throat 1 7/16 inch diameter with 2 1/4 inch choke air horn. Governor linkage 1 3/4 inch center to center. Reliable Performance: Ensures optimal fuel mixture and smooth engine operation. Compatible with throttle bodies 8557D 8557DX 8867D. Quality Assurance: Hand selected components with rigorous quality control. Built for durability and perfect fitment in agricultural applications. 50983DB Carburetor Compatible With International Harvester Farmall M MV O6 OS6 W6 Tractors Replaces 50983DC 50983DD 47387D