E-3 E3.56 Diamond Fire Spark Plug for 97-98 Jeep Grand Cherokee ZJ with 5.2L or 5.9L Engine, 99-10 Grand Cherokee WJ & WK with 4.7L V8 Engine | Quadratec
New spark plugs - whoever designed the layout of the 3.6 should be beaten about the head | Jeep Wrangler Forum
Set of 16 Chrysler Jeep Dodge Ram 5.7 Liter HEMI NKG Spark Plugs Mopar - Amazon.com
2000 Grand Cherokee 4.7L random engine stalling | Jeep Garage - Jeep Forum