NGK 8070 LD05FP Spark Plug Cap Resistor covers may be required for power sport applications when spark plugs alone don't provide sufficient noise suppression. Designed to reduce electro magnetic interference and radio frequency interference, which can interfere with electronic ignition components, causing misfires and poor engine performance. Highly durable phenolic resin and EPDM rubber Ceramic resistors ensure optimum performance and reliability Built to withstand extreme heat and vibration Prevents flashover Ensures optimal service life and performance Dimensions Allowable ø Plug Thread10mm/12mm Allowable Terminal Type Threaded Stud Allowable Wire Diameter7mm-8mm Specifications Color Black Fit Universal Material Phenolic Resistance Value5k Ohms Shape90° Elbow Special Feature Waterproof Cover Included Part Information