ACCEL 8122R GM HEI Red Stylized Cap and Rotor Kit Impenetrable barrier to arc through and crossfire Guards against high temperatures and surges of spark current that can melt molded components in Original Equipment caps Specially designed for 1974 to 1989 GM V8s Made from a high performance 60kV rated alkyd compound Brass inserts and stainless steel rotor springs allow unrestricted spark energy flow