Features & Benefits:
 
Trapezoidal ground electrode allows for higher ignitability and reduces quenching
High-grade alumina silicate ceramic for stronger insulation to reduce dielectric punch-through (caused by spark exiting through side of ceramic)
Trivalent plating means no anti-seize required
Cold-rolled threads prevent cross-threading and damage to cylinder heads
 
NGK 90198 Specifications

Center Electrode Core Material ----- Copper
Center Electrode Tip Material ----- Platinum
Electrical Terminal Type-----Non-Removable Nut
Gap Size (IN)-----.040
Ground Configuration ----- Standard
Ground Electrode Core Material ----- Nickel
Ground Electrode Quantity ----- 1
Ground Electrode Tip Design ----- Trapezoid
Hex Size (IN) ----- 5/8
Insulator Height (mm) ----- 52.50
Manufacturer Heat Range ----- 6
Part Number ----- LTR6GP
Reach (mm) ----- 25.00
Resistance (ohms) ----- 5000
Seat Type ----- Tapered
Stock Number ----- 90198
Thread Diameter (MM) ----- 14.00