Champion J8C Spark Plug 841

Key Specifications
Thread Size: 14mm
Thread Reach: 9.5mm (3/8")
Hex Size: 20.6mm (13/16")
Heat Range: 8 (Champion scale)
Gap Setting: 0.6mm (0.025") pre-set
Resistor: No (Non-resistor type)
Seat Type: Gasket (Flat seat)
Electrode: Copper Core center electrode with Nickel Alloy tip