ACCEL U-Groove Spark Plugs - '86+ XL & '99-'17 TC 2418

U-Groove Spark Plugs - '86+ XL & '99-'17 TC
Accel's state-of-the-art, U-Groove spark plugs with ground electrodes, copper glass inner seal and an electric heat seal to prevent leakage in high-compression engines, Knurled chromium-nickel alloy side wire for greater durability and greater spark with reduced voltage, Permit the spark to develop a larger, fuller flash for a more complete burn, Pure copper core decreases fouling, Extra-wide heat range