Spark Plug: Installation: 3.7L

Fig 1: Setting Spark Plug Gap - Typical

Courtesy of CHRYSLER LLC

Check and adjust the spark plug gap with a gap gauging tool (1). See Specifications .
Start the spark plug into the cylinder head by hand to avoid cross threading.
Tighten the spark plugs to 27 N.m (20 ft. lbs.).

Fig 2: Locating Ignition Coils
Courtesy of CHRYSLER LLC
Before installing the ignition coil (1), check the condition of the coil O-ring and replace as necessary. Apply silicone based grease such as Mopar® Dielectric Grease into the spark plug end of the rubber boot, coil O-rings and to the top of spark plugs.
Install the ignition coil (1). See Installation .
Install all the necessary air filter tubing and air intake components at the top of the engine and at the throttle body.