My kids 04 Hemi were changed at 30K.He got Champion double platinums free from his buddy so he used them.Milage went up about 1 to 2 mpg.They have been in for 50K now.Still runs great.Use a dab of diaelectric on the boots and a dab of antisieze on the plug threads and also on the coil over bolts.Rocky


Chrysler Firepower