You wouldn't run an arc welder off a lamp cord, so don't let your spark plug wires be the weak link in your high-performance ignition system. For peak performance you can see and feel, insist on Accel 300 ThunderSport Ferro-Spiral Ultra Performance Spark Plug Wires. Each spark plug boot is precision-molded to fit your vehicle - no universal one-size-fits-all substitutes! The high gloss 8mm double silicone wire is rated at over 550°F and 60KV. With resistance of only 150ohms/foot, plus the heaviest gauge spiral-wound alloy conductor in the industry - you're guaranteed maximum voltage potential and amperage at the spark plug. Ferro-Spiral core has unsurpassed EMI-RFI (radio noise) suppression, so it won't affect any electronic equipment in your vehicle.