For 1990-2009 cars

### Installation Procedure

1. Install the exhaust manifold gasket.
2. Install the exhaust manifold.

Caution: Refer to Fastener Caution in the Preface section.

3. Install the 8 exhaust manifold nuts and torque in the sequence shown.

Tighten
Tighten the exhaust manifold nuts 22 N·m (16 lb ft).

4. Install the catalytic converter-to-exhaust manifold nuts.

Tighten
Tighten the catalytic converter-to-exhaust manifold nuts to 40 N·m (30 lb ft).

5. Install the exhaust manifold heat shield.
6. Install the exhaust manifold heat shield bolts.

Tighten
Tighten the exhaust manifold heat shield bolts to 15 N·m (11 lb ft).

7. Connect the O2 sensor.
8. Connect the ignition wires to the spark plugs.
9. Connect the negative battery cable.