New item 01/20/20! OEM Zenith carburetor & fuel pump diaphragm/gasket kit for the Marvel-Schebler model DD13 carburetors used on all late production BF and all B43M and B48M models thru 1985. These 226/446/448 model tractors have the fuel pump integral to the carburetor. This kit replaces Onan part number 142-0571 at a much lower cost as it is sourced from the manufacturer rather than Cummins/Onan. Use for any application calling for Case/Ingersoll p/n C24665, these are the same parts and made in USA!