NGK Ruthenium HX is designed for newer engines which demand high ignitability. Double Fine Electrode (DFE) design promotes spark energy concentration and ignites a wider range of air-fuel ratios, offering improved performance in rich or lean engine conditions. DFE (double fine electrode) maximizes ignitability, while reducing emissions for low-heat engines. This NGK-patented design is recommended for non-turbo applications.  

Features and Benefits:

• 0.4mm Ruthenium alloy fine wire center electrode and 0.8mm platinum fine wire ground electrode
• Trivalent metal platinum 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

OE Part #'s

06H-905-601-A / 06H905601 A / 06H 905 601 A / 06H905601A

101-905-631-H / 101905631 H / 101 905 631 H / 101905631H


NGK Part #'s   FR7BHX-S / 92400