NGK Ruthenium HX is designed for newer engines which demand high ignitability. Projected Square Platinum Electrode (PSPE) design promotes spark energy concentration and ignites a wider range of air-fuel ratios, offering improved performance in rich or lean engine conditions. 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.
 
Shell
Thread Diameter
14mm
Thread Pitch
1.25mm
Seat Type
Tapered
Reach
25mm (1")
Hex Size
5/8" (16mm)
Terminal Type
Solid
Gap
.031" (0.8mm)
Center Electrode
Material
Ruthenium
Type
Fine Wire
Size
0.6mm
Projection
Extended Projection
Ground Electrode
Material
Platinum
Type
Projected Square
Quantity
1
Specifications
Resistor
Yes
Resistor Value
5k Ohm
Heat Range
7
Torque Specs
Cast Iron: 10.8-18 lb. ft. Aluminum: 7.2-14.5 lb. ft.
Part Information
Brand
NGK/NTK
Warranty
1 Year
Longevity
60-120k Miles