LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2003 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 4.0L Engine >> Cylinder Head >> Description

Cylinder Head: Description

The cylinder head is made of cast iron containing twelve valves made of chrome plated heat resistant steel, valve stem seals, springs, retainers and keepers. The cylinder head and valve seats can be resurfaced for service purposes.

The valve guides are integral to the cylinder head, They are not replaceable. However, they are serviceable.

The cylinder head uses dual quench-type design combustion chambers which cause turbulence in the cylinders allowing faster burning of the air/fuel mixture, resulting in better fuel economy (Fig 1).

Fig 1: Identifying Cylinder Head 4.0L Engine
G02712029Courtesy of DAIMLERCHRYSLER CORP.