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6x NGK Iridium LTR6IX-11 6509 Spark Plugs (Stock Heat Range)

6x NGK Iridium LTR6IX-11 6509 Spark Plugs (Stock Heat Range)

Your Price:$50.88
Retail Price:$60.88
MPT Saves You:$10.00(16%)
Part Number:NGK-6509-6

NGK Iridium Spark Plugs LTR6IX-11 6509 Set of 6 (Stock Heat Range)

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


  • 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 provides superior anti-corrosion and anti-seizing properties
  • Outstanding acceleration, high fuel efficiency and durability
  • Ultimate design, technology, and performance

Spark Plug Details:

  • Thread Size: 14mm
  • Heat Range: 6
  • Hex Size: 5/8 (16mm)
  • Reach: 25mm (1")
  • Out of the Box Gap: .044 (1.1mm) (Recommended gap .028 to .032 for Forced Induction)
  • Terminal Type: Solid
  • Resistor: Yes
  • Thread Pitch: 1.25mm
  • Center Electrode Type: Fine Wire
  • Electrode Material: Iridium
  • Electrode Size: .06mm
  • Electrode Projection: Projected
  • Ground Electrode Type: Taper Cut
  • Ground Electrode Material: Nickel

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