NGK 97506 "2 Step Colder" Spark Plug - Priced Each

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NGK 97506 (SILZKBR8D8S) Laser Iridium Plugs can be used any modern BMW Turbo Engine. This includes N20, N54, N55, S55, N63, N63TU, S63, and S63TU engine platforms. With a 8 Heat Range, these are a common "2 step" colder plug that is ran in N54s, and 1 step colder for N55 and S55. This is equivalent to a Bosch 4 Heat Range.

NGK Laser Iridium spark plugs provide superior ignitability and long service life.
Fine wire iridium tipped center electrode and fine wire platinum tipped ground electrode ensures slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions.

  • 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


  • Hex Size: 14mm Double Hex, Usually special BMW sockets are required.
  • Gap: .031" (0.8mm)
  • Heat Range: 8
  • Fine Wire Iridium Center Electrode
  • Taper Cut Platinum Ground Electrode
  • Torque Specs
    • Cast Iron: 10.8-18 lb/ft
    • Aluminum: 10.8-14.5 lb/ft.

Spark Plugs Sold Individually, Order a quantity of 6 for a full set.