The 2.4 far surpasses the previous Chrysler 2.5-liter SOHC engine in power and torque. The cylinder head is a low profile aluminum casting with pent-roof combustion chambers that house four valves per cylinder. The valve included angle is 48 degrees, allowing large valves. Dual camshafts run in six bearings with removable caps that are machines in the head base material. Powdered metal valve seat inserts and valve guides are pressed into the head.
Spark plugs thread into the center of the combustion chamber through wells cast into the head.
The degree of tumbling action was balance against the conflicting need for high air flow to obtain high power output. Made of die cast aluminum, the cylinder head cover features an isolated mounting with an O-ring type, silicone perimeter gasket. The DIS coil- mount is built into the cover. The PCV system is also integral with the cylinder head cover. The intake manifold combines tuned individual runners for each cylinder with an integral plenum chamber.