Open Rear Differential - V6 3.0L S/C Petrol, GTDI 2.0L Petrol And TDV6 3.0L Diesel Vehicles: Notes
| ITEM | DESCRIPTION |
|---|---|
| 1 | Cover |
| 2 | LH (left-hand) rear drive halfshaft oil seal |
| 3 | Filler/Level plug |
| 4 | Input flange |
| 5 | Front mounting points with insulator assemblies |
| 6 | Carrier |
| 7 | Rear mounting points |
| 8 | Breather |
| 9 | RH (right-hand) rear drive halfshaft oil seal |
| 10 | Magnetic drain plug |
The open rear differential is a conventional design using a hypoid gear layout. The final drive ratios differ between engine type, refer to 'Overview' for ratio details.
The cast iron casing comprises two parts; a cover and a carrier. The carrier provides locations for all the internal components. The cover is sealed to the carrier with Loctite RTV sealant and secured with nine bolts. The cover and carrier have cast fins, which assist rigidity and cooling. A breather cap is fitted to the top of the carrier.
The diesel open rear differential differs from the petrol variants in respect to the final drive ratio and the input flange which connects the propshaft to the differential. The diesel input flange is larger to address driveline NVH (noise, vibration and harshness) boom inherent with the diesel engine.