Nology Nology Silver Spark Plugs Fits: > 84-99 Evo Bigtwin; 85-84 Shovelhead
sold each
Nology Silver spark plugs are especially designed for high-performance engines. Silver is one of the best electrical and thermal conductors of any metal, which makes it the ultimate material for a spark plug's center electrode. The large diameter silver center electrode increases spark carrying ability and spark power. Silver is extremely resistant to erosion, guaranteeing a virtually unchanged electrode gap for the life of the spark plug. Most Nology Silver spark plugs are without a resistor, perfect for performance enthusiasts who demand the most from their engines. For racing or dependability and efficiency for everyday use, Nology Silver spark plugs deliver the most powerful spark. .
part number 239218
Fits:
| 1200 Shovelhead | 1975-early 1978 |
| 1200 Shovelhead | late 1978-1980 |
| 1340 Shovelhead | late 1978-1979 |
| 1340 Shovelhead | 1980-1981 |
| 1340 Shovelhead | 1982-1984 |
| 1340 Evolution | 1984-up |
