NGK 2309 Iridium IX LFR7AIX Spark Plugs (Set of 16) (2009+ 5.7L VVT, 2015+ 6.2L HEMI)

These NGK Iridium IX spark plugs feature an ultra-fine center electrode that's designed just thick enough to ensure the maximum durability and life of the spark plugs, and just thin enough to create an accurate and consistent spark. They represent the ultimate evolution of spark plug technology and performance. Iridium is significantly stronger than any metal used in spark plugs today. It's the hardest metal used (in fact, iridium is 6 times harder than platinum), which has allowed NGK engineers to reduce the voltage requirement for a spark.

Features
Shorty Spark Plug: No
Resistor: Yes
Manufacturer Heat Range: 7
Electrode Core Material: Copper
Electrode Tip Material: Iridium
Insulator Type: Projected Spark Plug
Thread Size: 14mm
Spark Plug Reach: 1.043 in.
Spark Plug Seat Style: Gasket
Wrench Diameter: 5/8 in.
Ground Strap Quantity: One
NGK Part Number: LFR7AIX