Section 544 (3.7L Engine (Service Information)): Manifold-Exhaust: Description

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exhaust Manifolds

Courtesy of DAIMLERCHRYSLER CORP.

The exhaust manifolds( 1 and 2) are log style with a patented flow enhancing design to maximize performance. The exhaust manifolds are made of high silicon molybdenum cast iron. A perforated core graphite exhaust manifold gasket is used to improve sealing to the cylinder head.

Fig 2: Exhaust Manifold Heat Shields

Courtesy of DAIMLERCHRYSLER CORP.

The exhaust manifolds are covered by a three layer laminated heat shield ( 1 and 3) for thermal protection and noise reduction. The heat shields(1 and 3) are fastened with a torque prevailing nut that is backed off slightly to allow for the thermal expansion of the exhaust manifold.