Front Section - 5.0L Naturally Aspirated And Supercharger

The front section is common to both the naturally aspirated and supercharger vehicles. The front section comprises two separate pipes each incorporating a catalytic converter. Each catalytic converter has a welded pipe with a flange, which is flared into a cone which mates with the exhaust manifold. Each flange has two holes which locate on studs in the exhaust manifold and are secured with nuts. Each catalytic converter is fitted with a mid catalyst HO2S (heated oxygen sensor).

On vehicles from 2013MY, a post catalyst HO2S is located in the curved pipe from each catalytic converter.

A straight pipe from each catalytic converter locates into the front silencer inlet pipes of the center section. The LH (left-hand) pipe is fitted with a mass damper which absorbs resonance from the system.