Maintain reliable combustion cycles and smooth ignition mapping with the genuine Honda OEM Resistor Spark Plug (NGK ZFR5F / 98079-5587G). Featuring a solid copper core encased in trivalent metal plating, this plug offers superior anti-fouling characteristics, reliable heat dissipation, and an internal resistor design that dampens radio frequency interference (RFI) with nearby electronic equipment.

Engine Compatibility

Fits select Honda GX V-Twin series engines (GX630, GX690, etc.).

Specifications

• Thread Diameter: 14mm
• Hex Size: 5/8" (16mm)

Maintenance Schedule

Gap check every 50 hours; replace every 100–200 operational hours to prevent coil strain.