For 1990-2009 cars

Important: California emissions vehicles are equipped with an additional (PUP) catalytic converter and a different exhaust manifold from federal emissions vehicles.

1. Perform the following if the vehicle is equipped with the PUP catalytic converter:

1.1. | Install the new exhaust manifold gasket to the cylinder head.

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.

1.2. | Install the exhaust manifold. Secure the exhaust manifold with the 8 nuts and 1 bolt.

Tighten
Tighten the 8 nuts and 1 bolt to 50 N·m (37 lb ft).

1.3. | Install the exhaust manifold-to-engine block bracket.

1.4. | Apply anti-seize compound to the threads of the oxygen sensor.

1.5. | Install the oxygen sensor.

Tighten
Tighten the oxygen sensor to 45 N·m (33 lb ft).

1.6. | Install the exhaust manifold heat shield. Secure with the 3 bolts and 2 nuts.

2. Perform the following if the vehicle is not equipped with the PUP catalytic converter:

2.1. | Install the new exhaust manifold gasket to the cylinder head.

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.

2.2. | Install the exhaust manifold. Secure the exhaust manifold with the 1 bolt and the 8 nuts.

Tighten
Tighten the 8 nuts and 1 bolt to 50 N·m (37 lb ft).

2.3. | Install the exhaust manifold-to-engine block bracket.

2.4. | Apply anti-seize compound to the threads of the oxygen sensor.

2.5. | Install the oxygen sensor.

Tighten
Tighten the oxygen sensor to 45 N·m (33 lb ft).

2.6. | Install the exhaust manifold heat shield to the exhaust manifold. Secure the exhaust manifold heat shield with the 4 bolts and 1 nut.