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 center 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 utilize power reserves.

The special thing about it:

• The electrode material iridium is virtually resistant to spark erosion.
• Iridium enables particularly narrow center electrodes with a diameter of only 0.6 mm.
• With narrow center 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 series plugs) up to and including 2008
6.1 SRT8 motors (1 stage cooler than series plugs)
6.4 SRT8 motors (same heat value as standard plugs)

Delivery includes:

16 spark plugs