Change Car Accessory Belt Kit BMW 1-Series

Change Car Accessory Belt Kit

Easy 0h30–2h00 ~50–200£
Estimated time 0h30–2h00
Estimated labour cost ~50–200£
Difficulty Easy
Renew the air-conditioning compressor drive belt 0h30–2h00
Renew the ancillary drive belt 0h30–2h30
Renew the engine oil and filter 0h30–0h45

What is a BMW 1-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 1-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 1-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.

View all compatible products →
View your 1-Series maintenance plan (keep the 1-Series token) →

3 models covered

Model Year Range Engines covered Fuel
1-Series 2004-2013 2004-2013 116d Diesel (N47D20A), 116d Diesel (N47D20C), 116i Petrol (N43B16A), 116i Petrol (N43B20A), 116i, -LPG LPG,Petrol (N45B16A), 118d Diesel (M47D20TU2), 118d Diesel (N47D20A), 118d Diesel (N47D20C), 118i Petrol (N43B20A), 118i Petrol (N46B20B), 118i, -LPG LPG,Petrol (N46B20B), 120d… Diesel, LPG, Petrol
1-Series 2011-2019 2011-2019 114d Diesel (B37D15A), 114d Diesel (N47D16A), 114i Petrol (N13B16A), 116d Diesel (B37D15A), 116d Diesel (N47D20C), 116d EfficientDynamics Diesel (B37D15A), 116d EfficientDynamics Diesel (N47D16A), 116i Petrol (B38B15A), 116i Petrol (N13B16A), 118d Diesel (B47D20A), 118d Diesel (… Diesel, Petrol
1-Series 2019-2025 2019-2025 116d Diesel (B37C15A), 116i Petrol (B38A15A), 118d Diesel (B47C20B), 118i Petrol (B38A15A), 118i Petrol (B38A15F), 120d xDrive Diesel (B47C20B), 120i Petrol (B48A20A), 128ti Petrol (B48A20E), M135i xDrive Petrol (B48A20E) Diesel, Petrol

Other repair guides

Change Car Air Filter

Change Car Air Filter

Very easy 0h30–1h30
Change Car Battery

Change Car Battery

Very easy 0h30–1h30
Change Car Cabin Filter

Change Car Cabin Filter

Very easy 0h30
Change Car Front Brake Discs and Pads

Change Car Front Brake Discs and Pads

Easy 1h00–1h30
Change Car Front Brake Pads

Change Car Front Brake Pads

Easy 1h00
Change Car Handbrake Cable

Change Car Handbrake Cable

Very easy 0h30–0h45
Change Car Rear Silencer

Change Car Rear Silencer

Easy 0h45–2h00
Change Car Water Pump

Change Car Water Pump

Easy 2h00–8h00
Change Car Clutch

Change Car Clutch

Technical 5h00–11h00
Change Car Fuel Filter

Change Car Fuel Filter

Easy 0h30–1h30
Change Car Glow Plugs

Change Car Glow Plugs

Intermediate 1h30–2h30
Change Car Oil Filter

Change Car Oil Filter

Easy 0h30–8h00
Change Car Particulate Filter (DPF)

Change Car Particulate Filter (DPF)

Easy 0h30–5h00
Change Car Shock Absorbers

Change Car Shock Absorbers

Easy 4h00–5h00
Change Car Spark Plugs

Change Car Spark Plugs

Easy 0h30–2h00
Change Car Turbo

Change Car Turbo

Very technical 2h30–21h00
View the service schedule for your 1-Series →