NGK Spark Plug BMR4A 5728

Key Specifications
Thread Size: 14mm
Thread Pitch: 1.25mm
Thread Reach: 9.5mm (3/8")
Hex Size: 3/4" (19mm)
Gap: Factory pre-set at 0.028" (0.7mm)
Heat Range: 4 (NGK hot range)
Resistor: Yes (includes a 5k–10k Ohm resistor to prevent electrical interference)
Terminal Type: Removable nut