NGK Spark Plug – LMAR8GI-8 (92729)

NGK single iridium plugs were designed specifically for the performance enthusiast. Fine wire centre 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.

NGK single iridium plugs were designed specifically for the performance enthusiast. Fine wire centre 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

Shell

• Thread Diameter: 10mm

• Thread Pitch: 1.0mm
• Seat Type: Gasket
• Reach: 26.5mm (1.04″)
• Hex Size: 9/16″ (14mm)
• Terminal Type: Threaded Stud

Gap

• .031″ (0.8mm)

Center Electrode

• Material: Iridium
• Type: Fine Wire
• Size: 0.6mm
• Projection: Projected

Ground Electrode

• Material: Nickel
• Type: Standard

Quantity

• 1

Specifications

• Resistor : Yes
• Resistor Value: 5k Ohm
• Heat Range: 8
• Torque Specs:

  • Cast Iron: 7.2-10.8 lb. ft.

  • Aluminium: 7.2-8.7 lb. ft.

Part Information

• Brand: NGK/NTK
• Warranty: 60 Days
• Longevity: 50k Miles