Front Section - 5.0L Naturally Aspirated And Supercharger - From 2010MY
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. The mid catalyst HO2S is located in the catalytic converter.
On vehicles from 2013MY, a post catalyst HO2S is located in the curved pipe from each catalytic converter.
A curved pipe from each catalytic converter locates into the resonator inlet pipes of the center section. The LH (left-hand) pipe is fitted with a mass damper which absorbs resonance from the system.