Stainless Works Ford F-150 2004-08 5.4L Headers - Manual (Page 3)

28. Install right lead pipe using 2.5 clamp, re-install right heat shield and bolt in left
heat shield.
29. Install front O2 sensors, this will require removing nubs off plugs.
30. Install rear O2 sensors using extensions (109014), this will require removing nubs
from plugs.
31. Re-install all components except rear skid plate and battery.
32. Follow directions per application below:
CONNECTING TO FACTORY EXHAUST
33. This step is only required if reinstalling the factory exhaust. At the front of the
exhaust, there is a double wide clamp that was loosened above to remove the old
exhaust. Mark 10” from the front of the OEM pipe at this location and cutoff this
amount of tubing using a hacksaw. Remove the sharp edges. This removed
section will provide room to install the Y-Pipe from the headers to the factory
exhaust. See picture below:
34. Using (2) clamps provided, attach the Y-pipe to the lead pipes.
35. Place the OEM double clamp on the outlet end of the Y-pipe, reinstall factory
exhaust and slip into the double clamp.