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.
2015 Altitude - Billet Silver
SRT Rear Springs, Taillight Bezels and Grille Mesh, Black Gorilla Locking Lugs,
Mopar 4" Chrome exhaust tips, 1.25" Bora Wheel Spacers, Sylvania Ultra H11's,
15% Llumar Tint, Polk DB Center Channel, Mopar All Weather Mats + Cargo liner