NGK 7090 Specifications
Center Electrode Core MaterialCopper
Center Electrode Tip MaterialPlatinum
Electrical Terminal TypeNon-Removable Nut
Gap Size (IN).040
Ground ConfigurationStandard
Ground Electrode Core MaterialNickel
Ground Electrode Quantity1
Ground Electrode Tip DesignTrapezoid
Hex Size (IN)5/8
Insulator Height (mm)50.50
Manufacturer Heat Range5
Part NumberBKR5EGP
Reach (IN).75
Resistance (ohms)5000
Seat TypeFlat
Stock Number7090
Thread Diameter (MM)14.00
G-Power; Pre-Set Gap: 0.040"
NGK G-Power® platinum spark plugs feature a single platinum tip, 98% pure copper core and a .6 mm fine-wire center electrode for more focused sparks and better ignitability.

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