Reviews for E-3 E3.58 Diamond Fire Spark Plug for Chrysler, Dodge & Jeep Vehicles

Good quality

Spark plug. Works. What more can I say?

As much grief as the little 2.5 gets, it is reliable. Quality parts make all the difference in how well your engine will run and these plugs are no exception. Pair this with the 33004795 Rotor and new wires and you've got a complete tune up!

GREAT SO FAR. NOTICE THE BETTER RESPOND RIGHT AWAY.

Bought them from NAPA but they work great fixed my miss fire and feels like it runs a little bit better

I thought this was bull, I have never seen plugs make diff. These DO! I live in a snow covered hilly community. I had the shift into second all the time. I have had these installed for a while and I shift ¼ as much. GOOD UPGRADE 2009 TJ 4.0

Great product, does the job and got rid of my check engine light sensing a misfire.

Very hot plug. I pulled one the other day after several thousand miles of driving. They are clean and definitely do the job.

can't tell the difference but they do look neat.

First plug set I ever got that were all gapped correctly right out of the box. My 4.2L 6 idles like new again, and 2nd gear power is back!