The best technique to improve ignition is to use ACCEL distributor caps. To ensure the integrity of the 60,000 V alkyd high-performance compound, the compression-molded caps are stress-relieved immediately after moulding. Brass inserts provide for a high flow of spark energy. These heavy-duty ACCEL distributor caps provide your engine with the most power. They come in a variety of styles and may be used on a variety of vehicles.