Change Car Accessory Belt Kit BMW 6-Series
Change Car Accessory Belt Kit
Easy
0h45–2h30
~75–250£
| Estimated time | 0h45–2h30 |
|---|---|
| Estimated labour cost | ~75–250£ |
| Difficulty | Easy |
| Renew the ancillary drive belt | 0h30–3h00 |
| Renew the engine oil and filter | 0h45–1h30 |
| Renew the air-conditioning compressor drive belt | 0h45–2h30 |
What is a BMW 6-Series accessory belt?
The accessory belt (also called the auxiliary belt or serpentine belt) allows the engine to drive peripheral components such as the alternator, air conditioning compressor, power steering pump, and sometimes the water pump.
When should you change the BMW 6-Series accessory belt?
Typical replacement is every 60,000–120,000 km or 4–6 years. Signs of wear include: squealing noise (especially at start-up or in wet weather), visible cracks or fraying. Always replace the tensioner and any idler pulleys at the same time.
Is it difficult to change the BMW 6-Series accessory belt?
Difficulty level 2/5: technically easy. Key steps: note the belt routing before removal, release the automatic tensioner, slide off the old belt, replace tensioner and idler pulleys, route the new belt, release the tensioner to apply tension.
2 models covered
| Model | Year Range | Engines covered | Fuel |
|---|---|---|---|
| 6-Series 2003-2011 | 2003-2011 | 630i Petrol (N53B30A), 630i, -LPG LPG,Petrol (N52B30A), 635d Diesel (M57D30), 645i Petrol (N62B44A), 650i, -LPG LPG,Petrol (N62B48B), M6 Petrol (S85B50A) | Diesel, LPG, Petrol |
| 6-Series 2011-2018 | 2011-2018 | 640d, -xDrive Diesel (N57D30B), 640i, -xDrive Petrol (N55B30A), 650i, -xDrive Petrol (N63B44A), 650i, -xDrive Petrol (N63B44B), M6 Competition Petrol (S63B44B), M6 Petrol (S63B44B), M6 Petrol (S63B44B) | Diesel, Petrol |
