OEM Ford Taurus X Exhaust Manifold

Ford Taurus X Exhaust Manifold Parts and Q&A

• Exhaust Manifold, Passenger Side
  7T4Z-9430-C
  Q: How to service and repair the right-hand (RH) exhaust manifold on Ford Taurus X?

  A:

  First remove both the RH Catalytic Converter then disconnect the RH heated oxygen sensor (HO2S) electrical connector for right-hand (RH) exhaust manifold servicing and repair. The six nuts holding the RH exhaust manifold should be removed before discarding both the nuts along with the gasket. The cleaning process of RH exhaust manifold follows inspection before discarding six RH exhaust manifold studs. The sealing surfaces require cleaning with a plastic scraper because metal scrapers and wire brushes produce scars and grooves which cause leakage so refer to product instructions for metal surface prep treatment. The installation procedure requires six new RH exhaust manifold studs which need to be fastened to 12 Nm (9 lb-ft) torque. A second tightness adjustment of exhaust manifold nuts according to specification remains necessary to avoid exhaust leaks. Install the RH exhaust manifold using new gasket materials followed by securing it with six new nuts which must be tightened to 20 Nm (15 lb-ft) in two installation steps. Reconnect the RH HO2S electrical connector before installing the right-hand catalytic converter in place.
• Exhaust Manifold, Driver Side
  7T4Z-9431-C
  Q: How to service and repair the left-hand (LH) exhaust manifold on Ford Taurus X?

  A:

  A service or repair of the left-hand (LH) exhaust manifold starts with taking out the LH Catalytic Converter and the LH heated oxygen sensor (HO2S). The procedure starts with removing three bolts from the LH exhaust manifold heat shield and then it proceeds to take out the six nuts holding the LH exhaust manifold and discarding both the nuts and the gasket. Clean the LH exhaust manifold before studying its condition then dispose of its six LH exhaust manifold studs. The sealing surfaces require avoidance of metal scrapers and wire brushes or abrasive tools to prevent leaks because they can create scratches and gouges; use a plastic scraper and follow packaging instructions for proper cleaning of the exhaust manifold mating surface on the cylinder head. Six new LH exhaust manifold studs must be installed after which torques should be set to 12 Nm (9 lb-ft). A proper second-round torque on exhaust manifold nuts is crucial for stopping exhaust leakage. Install the LH exhaust manifold with six fresh nuts and tighten them through two stages by beginning with 20 Nm (15 lb-ft) followed by an additional 20 Nm (15 lb-ft). First maintain 14 Nm (10 lb-ft) torque when reattaching the LH exhaust manifold heat shield through three bolts before adding the LH HO2S and finally installing the LH catalytic converter.