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
Note for Shovelhead - resistor-type plug one heat range hotter than standard plug.
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
Note for Shovelhead - resistor-type plug one heat range hotter than standard plug.