Used 1970 1971 1972 1973 1974 1975 standard factory aluminum fan spacer for Chevy Camaro and other several other GM applications in good physical condition – Measures 1 1/2” tall, standard wide 2 1/8” bolt circle, 5/8” fan arbor, 5/8” inside water pump bore – casting number 3927794 – fits several years of factory GM applications including Camaro, Impala, Chevelle, Monte Carlo, Nova