For 1990-2009 cars

### Removal Procedure

1. Remove the shut-off valve connector hose from the air check valve.
2. Remove the bolt from the check valve bracket.
3. Remove the bolts from the exhaust manifold.
4. Remove the air pipe and discard the gasket.

### Installation Procedure

1. Install the new air pipe gasket and install the air pipe into the exhaust manifold.

Tighten
Tighten the air pipe-to-exhaust manifold bolts to 18 N·m (13 lb ft).

2. Install the air pipe bracket bolt and tighten.

Tighten
Tighten the air pipe bracket bolt to 25 N·m (18 lb ft).

3. Install the air check valve to the air pipe.
4. Install the shut-off valve connector hose to the air check valve.