NGK Iridium Spark Plugs for Chrysler, Dodge and Jeep 5.7 Hemi Engines up to 2008, 6.1 SRT8 and 6.4 SRT Engines

These high-performance spark plugs with a centre electrode made of the precious metal iridium are used by many manufacturers as original equipment.
They were specially developed for the latest engine technologies, but they are also the alternative to the standard type for older models in order to fully exploit power reserves.

What makes them special:

• The electrode material iridium is almost resistant to spark erosion.
• Iridium enables particularly narrow centre electrodes of only 0.6 mm in diameter.
• With narrow centre electrodes, more ignitable mixture reaches the ignition spark. This leads to reliable ignition and better spread of the flame front.

Fits:

5.7 Hemi engines (2 stages colder than standard plugs) up to and including 2008
6.1 SRT8 motors (1 stage colder than standard plugs)
6.4 SRT8 motors (same heat value as standard plugs)

Delivery includes:

16 Spark plugs