How to Install a BBK Off-Road Shorty X-Pipe - Automatic on your 1979-1993 Mustang 5.0L

This Mustang Parts Installation Guide Works For

BBK Off-Road X-Pipe - Automatic (79-93 5.0L w/ Long Tube Headers)DOWNLOAD PDF

Tools Required

Installation Time: 2 Hours


  1. Place all four corners of the vehicle on jackstands or use a drive on lift.
  2. ! CAUTION!

    Use extreme caution under vehicle

  3. Next disconnect the negative battery cable.
  4. To remove the factory mid-pipe: first remove the oxygen sensors using a 22mm wrench. Then take off the header flange nuts at the collectors then disconnect the air tube from the H-pipe. (In some instances cutting may be necessary.) Next disconnect the mufflers from the mid-pipe. Lubricate the H-pipe hangers with WD-40 or equivalent and slide back to remove. *
  5. For installation simply reverse the previous steps, making sure to reconnect the air tube to the connector tube located on the new BBK mid-pipe.
  6. NOTE

    Do not plug off the air line from the air pump. Air pump damage and premature catalytic converter damage will occur.

  7. Using the supplied muffler style clamp, install over the mid-pipe crossover tube and tighten to avoid any leaks - this part can also be welded to avoid any exhaust leaks.
  8. *1994 and newer models are equipped with a bolt-on hanger system rather than the steel slide style used on the 1986-93 models. To remove simply unbolt the H-pipe from the hanger mount.