Change Car Accessory Belt Kit BMW Z4

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 0h30–2h00
Renew the engine oil and filter 0h45

What is a BMW Z4 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 Z4 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 Z4 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 Z4 maintenance plan (keep the Z4 token) →

3 models covered

Model Year Range Engines covered Fuel
Z4 2003-2009 2003-2009 2.0i Petrol (N46B20B), 2.2i Petrol (M54B22), 2.5i Petrol (M54B25), 2.5i Petrol (N52B25A), 2.5si Petrol (N52B25A), 3.0i Petrol (M54B30), 3.0si, -LPG LPG,Petrol (N52B30A), M Petrol (S54B32) LPG, Petrol
Z4 2009-2016 2009-2016 sDrive 18i Petrol (N20B20A), sDrive 20i Petrol (N20B20A), sDrive 20i Petrol (N20B20A), sDrive 23i Petrol (N52B25A), sDrive 28i Petrol (N20B20A), sDrive 30i Petrol (N52B30A), sDrive 35i Petrol (N54B30A), sDrive 35is Petrol (N54B30A) Petrol
Z4 2019-2025 2019-2025 M40i Petrol (B58B30C), sDrive 20i Petrol (B48B20B), sDrive 30i Petrol (B48B20B) Petrol

Other repair guides

Change Car Air Filter

Change Car Air Filter

Very easy 0h30–0h30
Change Car Battery

Change Car Battery

Very easy 0h30–0h45
Change Car Cabin Filter

Change Car Cabin Filter

Very easy 0h30–0h45
Change Car Front Brake Discs and Pads

Change Car Front Brake Discs and Pads

Easy 1h30
Change Car Front Brake Pads

Change Car Front Brake Pads

Easy 1h00–1h30
Change Car Fuel Filter

Change Car Fuel Filter

Easy 1h00–3h30
Change Car Handbrake Cable

Change Car Handbrake Cable

Very easy 0h30–0h45
Change Car Oil Filter

Change Car Oil Filter

Easy 0h30
Change Car Rear Silencer

Change Car Rear Silencer

Easy 0h45–2h30
Change Car Shock Absorbers

Change Car Shock Absorbers

Easy 3h00–5h00
Change Car Spark Plugs

Change Car Spark Plugs

Easy 0h45–1h30
Change Car Water Pump

Change Car Water Pump

Easy 2h00–5h00
Change Car Clutch

Change Car Clutch

Technical 6h00–8h00
Change Car Turbo

Change Car Turbo

Very technical 8h00–13h00
View the service schedule for your Z4 →