GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2000 🢒 Regal 🢒 Engine 🢒 Engine Mechanical - 3.8L 🢒 Exhaust Crossover Replacement

Removal Procedure
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  2. Carefully remove the throttle body air inlet duct and the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.8L.

    3. Object Number: 153575 Size: SH
  3. Remove the exhaust crossover heat shield nuts.
  4. Remove the exhaust crossover heat shield.

    5. Object Number: 153576 Size: MH
  5. Remove the exhaust crossover pipe bolts.
  6. Remove the exhaust crossover pipe.
  7. Remove the exhaust crossover pipe seal.

Installation Procedure

    Object Number: 153576 Size: MH
  1. Install the exhaust crossover pipe seal to the exhaust crossover pipe at the right exhaust manifold connection.
  2. Install the exhaust crossover pipe.

    3. 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.

  3. Install the exhaust crossover pipe bolts.

    4. Tighten
    Tighten the exhaust crossover pipe bolts to 18 N·m (13 lb ft).


    Object Number: 153575 Size: SH
  4. Install the exhaust crossover heat shield.
  5. Install the exhaust crossover heat shield nuts.

    6. Tighten
    Tighten the exhaust crossover heat shield nuts to 20 N·m (15 lb ft).

  6. Carefully install the throttle body air inlet duct and the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.8L.
  7. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .