Ton's TP7EIX Iridium spark plug (replaces Harley 6R12 or NGK DCPR7EIX)

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Replacement Ton's Performance Iridium Spark plug for Harley Davidson Twin Cam 1999 - 2017 // Sportster 1986 - Present

Ton's 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
  • 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

Spark plugs sold as single plug.

Note: These plugs are not factory gapped. DO NOT GAP IRIDIUM PLUGS WITH A COIN OR DISC STYLE GAP TOOL. Attempting to gap Iridium plugs with any tool that contacts the center electrode will damage the electrode and void any warranty. Use a gap tool such as those combined with feeler gauges which has a fork or slotted prong that allows you to gently bend the 'L' shaped ground electrode to the proper gap. Most Harley models require a gap of .038 - .040 for electronic ignitions. Be sure to check your factory service manual.

  • Thread diameter: 12mm
  • Thread reach: 19mm
  • Seat type: flat
  • Hex size: 16mm
  • Tip configuration: projected
  • Construction: Standard construction
  • Terminal type: Fixed



Twin Cam 88/96/103  1999-2017
XL Sportster 883/1200  1986-Present


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