Spark Plugs

CS-AG735-8H4

NGK

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Perfect Upgrade for your 1st Gen Cooper R50 (2001-2006)

NGK IX Iridium Series plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today's high-tech, high performance engines. 4 spark plugs are included in this set.

  • Factory heat range, OE replacement
  • Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
  • Corrugated ribs prevent flashover
  • Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer
  • Copper core aids in heat removal
  • Triple seals prevent leakage
  • Pre-gapped to .031' - no need to adjust, providing faster installation

NOTE: If you have one of our reduced-size supercharger pulleys, you need the +1 step cooler BKR7EIX plugs.

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