Replacement Ton's Performance Iridium Spark plug for Harley Davidson Big Twin / Evolution 1975-1999, Replaces Harley 5R6A / 32342-04
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: 14mm
-
Thread Pitch: 1.25mm
- Thread reach: 19mm
- Seat type: Gasket
- Hex size: 21mm / 13/16"
- Tip configuration: projected
- Construction: Standard construction
- Terminal type: Fixed
Fitment:
| Evolution 1340 | 1984-1999 |
| Shovelhead | Late 1978-1984* |
*With electronic ignition
Not for use on Twin Cam or Sportsters.
Cross references: