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NGK Spark Plugs Since 1936 NGK has lead the industry in technology, innovation and world class design of its entire product line. You can depend on NGK for quality and reliability.
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NGK 2314 Iridium Spark Plugs for 5.7/6.1 Hemi, Set of 16
NGK 2314 Iridium Spark Plugs for 5.7/6.1 Hemi, Set of 16
Our Price: $148.00

NGK Iridium IX Spark Plugs represent the ultimate evolution of spark plug technology and performance. Iridium is significantly stronger than any metal used in spark plugs today. Its also the hardest metal used, which allowed NGK engineers to design an ultra fine center electrode; reducing the voltage requirement for Spark.

The design of the ultra-fine center electrode is designed not too thin to ensure maximum durability and life of the spark plug, and not too thick for an accurate and consistent spark. Iridium IX delivers the performance and durability to meet the demands and expectations of those who expect nothing but the best.

The 2314 Iridium is a Direct replacement (same heat range as stock) plugs in the Hemi LX Cars; but is one step colder in the Hemi Rams.
NGK 2314 Iridium Spark Plugs for 5.7 Hemi
NGK 2314 Iridium Spark Plugs for 5.7 Hemi
Our Price: $148.00

NGK Iridium IX Spark Plugs represent the ultimate evolution of spark plug technology and performance. Iridium is significantly stronger than any metal used in spark plugs today. Its also the hardest metal used, which allowed NGK engineers to design an ultra fine center electrode; reducing the voltage requirement for Spark.

The design of the ultra-fine center electrode is designed not too thin to ensure maximum durability and life of the spark plug, and not too thick for an accurate and consistent spark. Iridium IX delivers the performance and durability to meet the demands and expectations of those who expect nothing but the best.

The 2314 Iridium is a Direct replacement (same heat range as stock) plugs in the Hemi LX Cars; but is one step colder in the Hemi Rams.
NGK 2315 Iridium Spark Plugs for 5.7/6.1 Hemi, Set of 16
NGK 2315 Iridium Spark Plugs for 5.7/6.1 Hemi, Set of 16
Our Price: $148.00

NGK Iridium IX Spark Plugs represent the ultimate evolution of spark plug technology and performance. Iridium is significantly stronger than any metal used in spark plugs today. Its also the hardest metal used, which allowed NGK engineers to design an ultra fine center electrode; reducing the voltage requirement for Spark.

The design of the ultra-fine center electrode is designed not too thin to ensure maximum durability and life of the spark plug, and not too thick for an accurate and consistent spark. Iridium IX delivers the performance and durability to meet the demands and expectations of those who expect nothing but the best.

The NGK 2315 Iridium is 2 steps colder than stock heat range plugs (NGK 2313 and NGK 5306) in the 5.7 Hemi Ram and one step colder than the NGK 2314 and NGK 4306. .- good for big shots of Nitrous and forced induction.

5.7 HEMI Applications:

•NGK 2313 Iridium Spark Plug (Stock Heat Range for HEMI Rams and Most 5.7L LX cars)
•NGK 5306 Traditional Spark Plug (Stock Heat Range for HEMI Rams and Most 5.7L LX cars)



•NGK 2314 Iridium Spark Plug (One Step colder heat range plug than stock)
•NGK 4306 Traditional Spark Plug (One Step colder heat range plug than stock)



•NGK 2315 Iridium Spark Plug (Two steps colder heat range plug than stock)
6.1 HEMI Applications:

•NGK 2314 Iridium Spark Plug (Stock heat range plug for 6.1 HEMI)
•NGK 4306 Traditional Spark Plug (Stock heat range plug for 6.1 HEMI)



•NGK 2315 Iridium Spark Plug (One step colder heat range than stock)
NGK 6510 Iridium, Set of 16
NGK 6510 Iridium, Set of 16
Our Price: $149.99

Applications:

•3 steps colder for 2003-2008 5.7L HEMI cars/trucks
•2 steps colder for 2005- UP 6.1L HEMI
IRIDIUM IX

The Spark Plug Serious Enthusiasts Rely On.

Designed specifically for the performance enthusiast. Iridium IX® offers extreme ignitability, improved throttle response and superior anti fouling.

•Fine Iridium tip ensures high durability and a consistently stable spark
•Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines
•Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties
•Outstanding acceleration, high fuel efficiency and durability
•Ultimate design, technology and performance.