Re: Best Spark Plug for 2010 3.7
I would ONLY buy exactly what came installed from the factory. Call your local dealer's parts counter and just ask whats the stock plug for your jeep. The last 8 digits of your VIN will help them along with referencing the plugs.
2014 - Altitude - Billet Silver
5k vled led fogs, 15% tint, Mopar Slush Mats & Cargo Mat, Blk Lock Nuts
Ready for install: Overland Mesh Inserts, DDM 5k HID Kit, JL 250/1
Next: 1.5" Bora Spacers, JL Stealth Box, SRT Springs, 2" Hitch