High performance harmonic damper for three bolt or four bolt pulleys.
Built to withstand revving as high as 6500 rpm.
Made of nodular iron and given a gloss black with three sets of white timing marks.
6.4 inch, 28.4 oz.

Compatible with the 1964½, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, and 1979 Ford Mustang.
Also fits the 1974, 1975, 1976, 1977, and 1978 Mustang II

May require a spacer for some engine applications, see 81006