Parts Information
| Part | Manufacturer | OEM Part # | Price | Notes |
| Oxygen Sensor | ||||
| N54 | ||||
| Upper | ||||
| Front | BMW | 11787570760 | 274.18 | |
| Rear | BMW | 11787557758 | 274.18 | |
| Lower | ||||
| Front | BMW | 11787577666 | 263.22 | |
| Rear | BMW | 11787577667 | 263.22 | |
| N55 | ||||
| Top | BMW | 11787596908 | 274.18 | |
| Side | BMW | 11787589475 | 263.22 |