Exhaust System (I6 3.2L Petrol): Specifications
LUBRICANTS, FLUIDS, SEALERS AND ADHESIVES
| Item | Specification |
|---|---|
| Heated oxygen sensor (H02S) removal* | WD40 or Suitable alternative |
| Heated oxygen sensor (H02S) threads | Apply suitable high temperature anti-seize compound to threads of sensor |
* Apply to area around sensor threads prior to attempting to remove sensor
GENERAL SPECIFICATION
| Item | Specification |
|---|---|
| Catalytic converters - location | Fitted in the front section of the exhaust system |
| Exhaust manifolds | Manifold assemblies (2) with three fabricated branches merging into an integral catalytic converter are fitted to the cylinder head. |
| Exhaust system | stainless steel exhaust system supplied as two separate assemblies. Front section incorporating two catalytic converters and a rear section incorporating center and rear silencers |
TORQUE SPECIFICATIONS
| Description | Nm | lb-ft |
|---|---|---|
| Catalyst monitor sensor | 45 | 33 |
| Catalytic converter to exhaust manifold bolts* | 30 | 22 |
| Catalytic converter to center muffler nuts and retaining clamp | 24 | 18 |
| Exhaust manifold bolts | A | A |
| Exhaust manifold heatshield bolts | 10 | 7 |
| Exhaust support brackets to front subframe / floor bolts | 24 | 18 |
| Exhaust support bracket to center bearing carrier bolts | 24 | 18 |
| Exhaust tail pipe trim screws | 3 | 2 |
| Front muffler service sleeve clamp nuts | 40 | 28 |
| Heated oxygen sensor (H02S)+ | 45 | 33 |
* It is not appropriate to either fit or remove these fixings using air tools due to a risk of cold welding/snapping.
+ Apply anti-seize lubricant to threads of sensor - See Lubricants
A = refer to procedure for correct torque sequence