Quantity 4 Brand New NGK
Laser Iridium Spark Plugs


Laser Iridium


Laser Iridium is designed alongside OEMs to meet quality and durability standards for each manufacturer. Featuring high-grade alumina silicate ceramic and fine wire center electrodes, the Laser Series brings OE performance to every engine.

Center Electrode Core MaterialCopper Core
Center Electrode Tip MaterialIridium
Ground ConfigurationStandard
Ground Electrode Core MaterialNickel Core
Ground Electrode Quantity1
Ground Electrode Tip DesignSPE
Hex Size5/8 in
Insulator Height50.00 mm
Manufacturer Heat Range6
Part NumberSILZKR6B11
Pre-Gap Size.044 in
Reach26.5 mm
Resistance5000 Ohms
Seat TypeFlat
Stock Number6215
Thread Diameter12.00 mm