Shielded spark plug cap (cap) and current multiplier NGK TRS1233

The use of the built-in resistor caps in combination with resistive spark plugs ensures maximum interference suppression at any frequency with no negative effect on engine performance. The spark plug caps feature a 5K ohm resistive element made of a special ceramic material that ensures consistent resistance with minimal variation under overload conditions.

For use only with NGK R7282-105/110/111 spark plugs