The 112L has a 12.5 hp Kawasaki engine. JD has special specs on their Kawasaki engines, so you won't find that specific model number at any Kawasaki dealer. Best bet is to take the carb off and take it to a Kawasaki dealer and have them see if they can match the manufacturer part number. It probably is a Mikuni carburetor. You also may try to see if your dealer can do a nation wide search. The 160 and 165 lawn tractors used the same engine, so you might try used also. Check ebay and lawn tractor salvage yards for used also. Good luck.