Add to Favorite Sellers. Quality Aftermarket Carburetor (New, IHC Replacement) Fits International Harvester IH Farmall M, I6, O6, W6 Tractors Specifications This is a NEW carburetor, not rebuilt Mounting studs are 2-11/16″ center to center Governor linkage pattern is 1-3/4″ center to center The throttle body throat size is 1-7/16″ diameter The choke air horn (air inlet) measures 2-1/4″ outside diameter Replacement Numbers 50983DB, 50983DC. We recommend verifying the proper fit for your application with a parts catalog or other reference documents. All aftermarket items have been hand selected by our team and are continuously monitored by a quality control department. Should a craftsmanship or fitment concern be identified, JJAgParts will be sure to work with our customers to stand behind our products. Be sure to check out our other listings for great aftermarket and NOS items! Don’t forget to leave us feedback and we will be sure to do the same! . Thank you for this opportunity to earn your business! Thank you for looking! We appreciate the opportunity to earn your business. Feel free to ask any questions you may have.