High-quality upgrade for GM HEI distributors includes a Rynite injection-molded black cap, coil cover, and 2 rotor buttons (high and low-resistance). Brass and stainless terminals/contacts resist corrosion and provide maximum spark.

Product Features:

• Two different rotor buttons are included to use with either stock HEI or CD ignitions.
• Two different rotor buttons are included to use with either stock HEI or CD ignitions.á
• The high-resistance carbon rotor bushing for use with stock HEI distributors helps suppress radio frequency interference.
• The low-resistance rotor bushing allows the secondary voltage to be directed away from the distributor cap to the rotor without excessive heat buildup.