F 250 4WD Super Duty V10-6.8L VIN Z CNG (2003)
the engine configuration and number of cylinders.
Exhaust Pipes
Exhaust pipes are usually treated during manufacturing with an anti-corrosive coating agent to increase the life of the product. The pipes serve as
guides for the flow of exhaust gases from the engine exhaust manifold through the catalytic converter and the muffler.
Heated Oxygen Sensors (HO2S)
The HO2S provide the powertrain control module (PCM) with voltage and frequency information related to the oxygen content of the exhaust gas.
(Refer to the PCM Inputs for a description of how the HO2S operates.)
Muffler
Mufflers are usually treated during manufacturing with an anti-corrosive coating agent to increase the life of the product. The muffler reduces the level
of noise produced by the engine, and it also reduces the noise produced by exhaust gases as they travel from the catalytic converter to the atmosphere.
