For 1990-2009 cars

1. Install the oil cooler adapter with gaskets (1, 2) to the oil cooler.

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. Install the oil cooler adapter to oil cooler bolts.

Tighten
Tighten the oil cooler adapter to oil cooler bolts to 21 N·m (15 lb ft).

3. Install the two O-rings (1, 2) to the flywheel housing.
4. Apply a 2 mm wide bead of sealant to the flywheel housing sealing surfaces (3), including the upper oil pan to flywheel housing sealing area.
5. Install the flywheel housing to the cylinder block.
6. Install the flywheel housing bolts, denoted by a black circle.

Tighten
Tighten the flywheel housing bolts to 80 N·m (60 lb ft)

7. Install the oil cooler adapter to flywheel housing studs.

Tighten
Tighten the oil cooler adapter studs to 10 N·m (89 lb in).

8. Install the oil cooler adapter to flywheel housing nuts.

Tighten
Tighten the oil cooler adapter nuts to 25 N·m (18 lb ft).

9. Install a new gasket to the turbocharger oil return pipe.
10. Install the turbocharger oil return pipe to flywheel housing studs.

Tighten
Tighten the turbocharger oil return pipe to flywheel housing studs to 10 N·m (89 lb in).

11. Install the turbocharger oil return pipe nuts.

Tighten
Tighten the turbocharger oil return pipe nuts to 25 N·m (18 lb ft).