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For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1997 🢒 Corvette 🢒 General Information 🢒 General Information 🢒 Exhaust Manifold Installation

Exhaust Manifold Installation Right Side


    Object Number: 100175 Size: SH

    Important: 

       • Tighten the NEW exhaust manifold bolts as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets may affect vehicle emissions and/or on-board diagnostics (OBD) II system performance.
       • The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material.

  1. Apply a 5 mm (0.20 in) wide band of threadlock GM P/N 12345493 or equivalent to the threads of the NEW exhaust manifold bolts.
  2. Install the exhaust manifold gasket and exhaust manifold.
  3. Install the NEW exhaust manifold bolts.

    4. Tighten

    1. Tighten the exhaust manifold bolts a first pass to 15 N·m (11 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
    2. Tighten the exhaust manifold bolts a final pass to 20 N·m (15 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the front of the right cylinder head.

    5. Object Number: 59633 Size: SH
  5. Install the AIR pipe (with check valve), NEW gasket, and bolts.

    6. Object Number: 63229 Size: SH
  6. Install the AIR tube bolt to the left rear cylinder head.

    7. Tighten

    1. Tighten the AIR pipe to exhaust manifold bolts to 20 N·m (15 lb ft).
    2. Tighten the AIR pipe to left cylinder head bolt to 50 N·m (37 lb ft).
  7. Install the oxygen sensor into the intake manifold.

    8. Tighten
    Tighten the oxygen sensor to 42 N·m (30 lb ft).

Exhaust Manifold Installation Left Side


    Object Number: 64134 Size: SH

    Important: 

       • Tighten the NEW exhaust manifold bolts as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets may affect vehicle emissions and/or on-board diagnostics (OBD) II system performance.
       • The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material.

  1. Apply a 5 mm (0.20 in) wide band of threadlock GM P/N 12345493 or equivalent to the threads of the NEW exhaust manifold bolts.
  2. Install the exhaust manifold and NEW exhaust manifold gasket.
  3. Install the NEW exhaust manifold bolts.

    4. Tighten

    1. Tighten the exhaust manifold bolts a first pass to 15 N·m (11 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
    2. Tighten the exhaust manifold bolts a final pass to 20 N·m (15 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head.

    5. Object Number: 59582 Size: SH
  5. Install the AIR pipe (with check valve), NEW gasket, and bolts.

    6. Tighten
    Tighten the AIR pipe to exhaust manifold bolts to 20 N·m (15 lb ft).


    Object Number: 53269 Size: SH
  6. Install the oxygen sensor into the intake manifold.

    7. Tighten
    Tighten the oxygen sensor to 42 N·m (30 lb ft).