Original 1981 through 1987 Rochester Dualjet 210 2-barrel carburetor in used condition. GM part #17085190 JDK, with a date code of 270B4. Correct for 1981 1982 1983 1984 1985 1986 and 1987 Buick, Chevrolet GMC, Oldsmobile and Pontiac cars and trucks with the 231 V-6 engine (3.8L). Carburetor appears to be mostly complete; all linkage and choke assembly moves freely. Very good condition! $65. Will ship!