Description

A Set of four Brand New NGK
Iridium IX Spark Plugs


Iridium IX

The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX® ideal for the performance enthusiast. Iridium’s extremely high melting point is perfectly suited to today’s high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.

Fine iridium tip ensures high durability and a consistently stable spark
Trivalent metal plating for superior anti-corrosion and anti-seizing properties
Outstanding acceleration, high fuel efficiency and durability

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