For 1990-2009 cars

### Lower Intake Manifold Assemble Procedure

1. Install the fuel injector rail (2).

Notice: Refer to Fastener Notice in the Preface section.

2. Install the fuel injector rail to lower intake manifold retaining bolts (1).

Tighten
Tighten the fuel injector rail bolts to 10 N·m (89 lb in).

3. Install the fuel injector wiring harness (1).

### Upper Intake Manifold Assemble Procedure

1. Install the engine cover ball studs (1).

Tighten
Tighten the engine cover ball studs to 7 N·m (62 lb in).

2. Install the Intake Manifold Runner Control (IMRC) flap (1).
3. Install the IMRC flap to upper intake manifold retaining bolts (2).

Tighten
Tighten the bolts to 10 N·m (89 lb in).

4. Install the NEW throttle body gasket (3) to the intake manifold (4).
5. Install the throttle body (2).
6. Install the throttle body bolts to upper intake manifold retaining bolts (1).

Tighten
Tighten the bolts to 10 N·m (89 lb in).

### Upper to Lower Intake Manifold Assemble Procedure

Important: DO NOT reuse the upper-to-lower intake manifold gasket and the intake manifold-to-cylinder head sealing gaskets.

1. Install the NEW upper-to-lower intake manifold gaskets (1).
2. Install the upper intake manifold (1) to the lower intake manifold (2).
3. Install the fuel injector wiring harness bracket to upper intake manifold retaining bolt (1).

Tighten
Tighten the bolt to 10 N·m (89 lb in).

4. Install the upper-to-lower intake manifold retaining bolts (1).

Tighten
Tighten bolts to 23 N·m (17 lb ft).