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For 1990-2009 cars only

Exhaust Manifold Replacement - Left Side RPO LX9

Removal Procedure

  1. Remove the throttle body air inlet duct. Refer to Air Cleaner Inlet Duct Replacement .
  2. Drain the cooling system. Refer to Cooling System Draining and Filling .
  3. Remove the right engine mount strut bracket. Refer to Engine Mount Strut Bracket Replacement - Right Side .
  4. Disconnect the radiator inlet hose from the engine. Refer to Radiator Inlet Hose Replacement .
  5. Remove the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement .
  6. Remove the exhaust crossover pipe bolts from the engine left side exhaust manifold. Refer to Exhaust Crossover Pipe Replacement .

  7. Object Number: 60831  Size: SH
  8. Remove the exhaust manifold heat shield bolts.
  9. Remove the exhaust manifold heat shield.

  10. Object Number: 54301  Size: SH
  11. Remove the exhaust manifold nuts.
  12. Remove the exhaust manifold.
  13. Remove the exhaust manifold gasket.
  14. Clean the engine left side exhaust manifold to the engine left side cylinder head sealing surfaces.

Installation Procedure


    Object Number: 54301  Size: SH
  1. Install the exhaust manifold gasket.
  2. Install the exhaust manifold.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the exhaust manifold nuts.
  5. Tighten
    Tighten the nuts to 16 N·m (12 lb ft).


    Object Number: 60831  Size: SH
  6. Install the exhaust manifold heat shield.
  7. Install the exhaust manifold heat shield bolts.
  8. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  9. Install the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement .
  10. Install the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement .
  11. Connect the radiator inlet hose to the engine. Refer to Radiator Inlet Hose Replacement .
  12. Install the right engine mount strut bracket. Refer to Engine Mount Strut Bracket Replacement - Right Side .
  13. Fill the cooling system. Refer to Cooling System Draining and Filling .
  14. Install the throttle body air inlet duct. Refer to Air Cleaner Inlet Duct Replacement .

Exhaust Manifold Replacement - Left Side RPO LZ9

Removal Procedure


    Object Number: 1679427  Size: SH
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  2. Remove the right engine mount strut bracket. Refer to Engine Mount Strut Replacement - Left Side .
  3. Remove the radiator inlet hose. Refer to Radiator Inlet Hose Replacement .
  4. Disconnect the heater hoses from the heater pipes.
  5. Remove the nuts holding the heater pipes on the throttle body.
  6. Position the heater pipes aside.
  7. Remove the exhaust crossover heat shield bolts (1) and shield (2).

  8. Object Number: 1679429  Size: SH
  9. Remove the exhaust crossover pipe (2) to left exhaust manifold nuts.

  10. Object Number: 1617968  Size: SH
  11. Remove the exhaust manifold heat shield bolts.
  12. Remove the exhaust manifold heat shield.

  13. Object Number: 1617970  Size: SH
  14. Remove the exhaust manifold bolts.
  15. Remove the exhaust manifold.
  16. Remove the exhaust manifold gasket.

Installation Procedure


    Object Number: 1617970  Size: SH
  1. Position a NEW exhaust manifold gasket to the cylinder head.
  2. Install the exhaust manifold.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the exhaust manifold bolts.
  5. Tighten
    Tighten the bolts to 20 N·m (15 lb ft).


    Object Number: 1617968  Size: SH
  6. Install the exhaust manifold heat shield.
  7. Install the exhaust manifold heat shield bolts.
  8. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 1679429  Size: SH
  9. Install the exhaust crossover pipe (2) to left exhaust manifold nuts.
  10. Tighten
    Tighten the nuts to 20 N·m (15 lb ft).

  11. Position the heater pipes back and connect hoses.
  12. Install the nuts holding the heater pipe to the throttle body.
  13. Install the hose clamps to the heater pipes and hose.

  14. Object Number: 1679427  Size: SH
  15. Install the exhaust crossover heat shield (2) and bolts (1).
  16. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  17. Install the radiator inlet hose. Refer to Radiator Inlet Hose Replacement .
  18. Install the right engine mount strut bracket. Refer to Engine Mount Strut Replacement - Left Side .
  19. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .