Abstract: A combustor for an exhaust gas system includes a longitudinally compliant fuel conduit for allowing thermal expansion and contraction of other portions of the combustor relative to the fuel conduit while not misaligning the atomizer to which the fuel conduit is attached. The combustor includes an exhaust duct, a combustion chamber, and an air duct in addition to the atomizer and longitudinally complaint fuel conduit. The combustion chamber and air duct are disposed within the exhaust duct so that they are heated by the exhaust gases passing through the exhaust duct. The fuel conduit is disposed within the air duct so that air passing through the air duct keeps the fuel conduit relatively cool.