Idler Arm: 1972-74 GM Full size bodiesUnique Idler arm for the 72 74 GM Mainly full size bodies.. but listed below. Most RH Drive conversions still used the LHD idler arm but these are very much individual in their design so .. if needed . if RHD.. check visually first. Fits: BUICK CENTURION 1973 BUICK CENTURY 1973 1974 BUICK ELECTRA 1973 1974 BUICK ESTATE WAGON 1973 1974 BUICK GS 1972 BUICK GS 455 1972 BUICK LESABRE 1973 1974 BUICK REGAL 1973 1974 BUICK RIVIERA 1973 1974 BUICK SKYLARK