Comprehensive carburetor repair kit for Zenith carburetor numbers 12510, 12879, 14990 (4-Cyl JD Only), 15099 (4-Cyl JD Only), 15107. These carburetors are often found on JD 3010 and 3020 tractors. Please read the carburetor ID number on your carburetor before ordering parts to ensure proper fit.