One New Carburetor Fits Case IH, Fits FARMALL, Fits International Harvester. One New Aftermarket Replacement Zenith. Fits Case Fits IH Fits FARMALL Fits Cub Tractor. 154, 184, 185 With Engine Serial Number 312390 and up13781, 13794. Fits Cub, Fits Cub 154 LO-BOY, Fits Cub 184 LO-BOY, Fits Cub LO-BOY. Fits The Listed Zenith Style Carb Only. Replaces Part Number(s). The throttle bore measures 1-1/64. The carb mounting studs measure 1-13/16 center to center. The choke air horn (air inlet) measures 1-5/8 OD. The fuel inlet measures 1/8 NPT. The carb mounting flange gasket is included. NOTE: On Older Fits Cub Tractors, you may need to use 2 carb gaskets to clear the butterfly. PLEASE SAVE ALL ORIGINAL PACKAGING. If you receive an item that is not as described in the listing. Normally same day if before 1PM EST. Many things can play a factor such as Location, Weather, and the items in the order. If you have any questions, please reach out to us before ordering. How do I know if my order was submitted properly? Can I return an item that is defective, damaged, or I just don’t want? We sell those hard-to-find Parts at a quality and price that is sure to leave you satisfied.. Thank you for your business! We strive to deliver an exceptional shopping experience by providing detailed product information, accurate fitment guidance, and prompt assistance from our knowledgeable support team. Sign up to Newsletter. This listing is currently undergoing maintenance, we apologize for any inconvenience caused.