To be precise:
* 2.4L engine: The plugs are inline, towards the front of the engine.
* 4.0L engine: The plugs are arranged in a V configuration on the top of the engine.
Important Note: Consult your owner's manual for the precise location and diagrams. It will show you exactly where each spark plug is and provide torque specifications to prevent damage. Improperly installed spark plugs can cause engine damage.