Differential Cover: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| Rear Axle | ||||
| 323, 328, M3 | 1.3 | 0.9 | B | |
| 318I, IC, Is, 323 | ||||
| One Side | 2.1 | 1.5 | B | |
| Both Sides | 2.9 | 2.1 | B | |
| 318ti | 0.9 | 0.7 | B | |
| One Side | 1.3 | 0.9 | B | |
| Both Sides | 2.1 | 1.5 | B | |
| 328, M3 | ||||
| One Side | 1.7 | 1.4 | B | |
| Both Sides | 2.9 | 2.1 | B |