NGK SD05F-R 8238 Spark Plug Covers

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. Features: - 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 Specifications: - Dimensions - Allowable Ø Plug Thread: 10mm/12mm - Allowable Terminal Type: Threaded Stud - Allowable Wire Diameter: 7mm-8mm - Fit: Universal - Material: Phenolic - Resistance Value: 5k Ohms - Shape: Straight