Parts Information
| Part | Manufacturer | OEM Part # | Price | Notes |
| Horn | ||||
| 525i, 525xi, 530i, 530xi | ||||
| Low Note | BMW | 61336935988 | 61.72 | |
| High Note | BMW | 61336935987 | 61.72 | |
| 545i, 550i | ||||
| Low Note | BMW | 61336935988 | 61.72 | |
| High Note | BMW | 61336935987 | 61.72 | |
| M5 | ||||
| Low Note | BMW | 61337835736 | 37.80 | |
| High Note | BMW | 61337839345 | 61.72 |