NGK 6858 Spark Plug Laser Iridium DFH6B11A

6858 / DFH6B11A Laser Iridium Spark Plug by NGK. Often specified as original equipment, NGK Laser Iridium spark plugs are the best combination of performance and longevity. Iridium tip is six (6) times harder than platinum providing the strongest ignitability and the longest life possible. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in DIS ignition systems. OE engineered for specific vehicle applications.

Thread Diameter: 14 mm
Thread Pitch: 1.25 mm
Seat Type: Gasket
Reach: 26.5 mm (1.04")
Hex Size: 5/8" (16 mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .043" (1.1 mm)
Center Electrode
Material: Iridium
Type: Fine Wire
Size: 0.6 mm
Projection: Projected
Ground Electrode
Material: Platinum
Type: Hybrid
Quantity: 3
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 6
Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.
Electrode Material: Iridium
Nominal Gap: 1.1 mm

• Mfg Part No: 6858 DFH6B11A
• Related Part No: 6858 DFH6B11A