A Core deposit is a form of deposit you pay until returning your old part. If you don't have the core at the time of purchase, you must pay the core charge. That charge is refunded to you when you return the core.

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NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability.
Ground Electrode Core MaterialNickel Core
Center Electrode Core MaterialCopper Core
Manufacturer Heat Range8
Thread Diameter10.00
Hex Size5/8
Hex Size5/8"
Center Electrode Tip MaterialIridium
Ground Electrode Tip DesignTaper Cut
Gap Size.032
Gap Size0.032
Ground ConfigurationStandard
Seat TypeFlat
Ground Electrode Quantity1
Insulator Height50.50
Part Number4218
Line CodeNGK
TerminologySpark Plug
For warranty information please contact Auto-Wares.