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Ngk Iridium Ix Spark Plugs Heat 9 Bkr9Eix

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Designed specifically for the performance enthusiast Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling.

NGK is the brand leader in the UK spark plug market and are the world's biggest supplier to many major car manufacturers. Each and every one of their products are designed to meet the most rigorous standards and are the professionals' choice because of their quality and technical excellence. Their plugs can be found in use by teams in F1, WRC and MotoGP. Put simply, NGK genuine spark plugs are the workhorse at the heart of smooth-running engines around the world.

The NGK Iridium IX Spark Plugs utilise a 0.6mm laser welded fine iridium tip which ensures high durability and a consistently stable spark along with a tapered ground electrode which minimizes electrical quenching effect. The longer insulator nose prevents fouling, the corrugated ribs on the insulator prevent flashover and a triple gasket seal eliminates combustion gas leakage.

Heat Range:

  • BKR6EIX : standard grade, for standard engine and standard use or E85 fuel
  • BKR7EIX : one grade colder than standard, for lightly tuned or sporty engines, used both on the road or the track
  • BKR8EIX : two grades colder than standard, for tuned and powerful engines used mainly on the track
  • BKR9EIX : three grades colder than standard, for high power and heavily modified engines used in intense conditions


  • Fine Iridium tip ensures high durability and a consistently stable spark
  • Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines
  • Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties
  • Outstanding acceleration, high fuel efficiency and durability
  • Ultimate design, technology and performance

Technical Information:

  • Type: Resistor type
  • Thread Size: 14mm (9/16")
  • Hex Size: 16mm (5/8")
  • Reach: 19mm (3/4")
  • Gap: 0.8mm (0.03")
  • Thread Pitch: 1.25mm (1/16")
  • Height Standard: ISO
Centre Electrode:
  • Type: Fine Wire
  • Material: Iridium
  • Size: 0.6mm (0.02")
  • Projection: Projected
Ground Electrode:
  • Type: Taper Cut
  • Material: Nickel
  • Electrode Count: 1

Pack size

  • 4 pcs
Product Type:
Spark Plugs