AUXMART Carburetor for Jeep Carburetor BBD 6 CYL.Engine 4.2 L, 258 CU, Engine AMC (Automatic Choke) Fitment: for JEEP CARBURETOR BBD 6 CYL.ENGINE 4.2 L, 258 CU, ENGINE AMC Condition:100% brand new Material:Zinc Alloy Instructions: not included Add more horse power while maintaining near stock fuel mileage Heavy duty metal construction Notice: The oil channels of carburetors will be blocked without cleaning. Please clean up the oil channels and air filters as well as use the clean fuel before installing the carburetors Package Included: 1x Car Carburetor for JEEP 2x Mounting gaskets