New item 02/21/19! Carburetor mounting gasket for 1986 and newer 226/446/448 tractors as well as all Onan powered 3000/3100/4000/4100 models. These would be the Nikki carbureted models with an impulse fuel pump mounted on the blower housing. Replaces J I Case/Ingersoll p/n C29969. For earlier models utilizing the Marvel Schebler DD13 carburetor see our p/n ON145-0438.