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The NGK 4786 Spark Plug (LKAR8A-9) is a high-quality OE replacement designed for modern engines requiring precise ignition and long-term reliability. Built with a solid copper core and nickel alloy electrode, it delivers excellent heat dissipation, consistent combustion, and smooth engine performance—ideal for automotive and powersport applications.
🔧 Copper core ensures strong spark and thermal conductivity
🔧 Nickel alloy electrode resists fouling and wear
🔧 OE-style fit for fast and accurate installation
🔧 Pre-gapped at 0.9mm for optimized ignition
Brand & Part Number: NGK 4786 (LKAR8A-9)
Material: Nickel with Copper Core
Thread Size: 12mm
Reach: 26.5mm (1.04 in)
Hex Size: 5/8 in (16mm)
Heat Range: 8
Seat Type: Gasket
Resistor: Yes
Gap: 0.9mm (0.035 in)
Choose NGK LKAR8A-9 for consistent performance, efficient combustion, and long-lasting ignition reliability—order now!