Change Car Water Pump BMW 3-Series

Change Car Water Pump

Easy 0h30–9h00 ~50–900£
Estimated time 0h30–9h00
Estimated labour cost ~50–900£
Difficulty Easy
Vehicles
3-Series 1982-1995 15
  • 316 Petrol (M10B18)
  • 316i Petrol (M10B18)
  • 316i Petrol (M40B16)
  • 318i Petrol (M10B18)
  • 318i Petrol (M40B18)
  • 318is Petrol (M42B18)
  • 320i Petrol (M20B20)
  • 320i Petrol (M20B20)
  • 320is Petrol (S14B20)
  • 323i Petrol (M20B23)
  • 323i Petrol (M20B23)
  • 325e Petrol (M20B27)
  • 325i, -ix Petrol (M20B25)
  • M3 Petrol (S14B23)
  • M3 Petrol (S14B23)
3-Series 1990-2000 15
  • 316g (65/75 kW) CNG,Petrol (M43B16)
  • 316i (73/75 kW) Petrol (M40B16)
  • 316i, -LPG LPG,Petrol (M43B16)
  • 318i (83/85 kW) Petrol (M40B18)
  • 318i, -LPG LPG,Petrol (M43B18)
  • 318is Petrol (M42B18)
  • 318is, -LPG LPG,Petrol (M44B19)
  • 320i Petrol (M50B20)
  • 320i, -LPG LPG,Petrol (M52B20)
  • 323i Petrol (M52B25)
  • 323ti, -LPG LPG,Petrol (M52B25TU)
  • 325i Petrol (M50B25)
  • 328i, -LPG LPG,Petrol (M52B28)
  • M3 GT Petrol (S50B30)
  • M3 Petrol (S50B30)
3-Series 1998-2007 26
  • 316 Ci Petrol (M43B16TU)
  • 316i, -Ci, -LPG LPG,Petrol (M43B19TU)
  • 316i, -ti, -Ci Petrol (N40B16)
  • 316i, -ti, -Ci Petrol (N45B16)
  • 316i, -ti, -LPG LPG,Petrol (N42B18A)
  • 316i, -ti, -LPG LPG,Petrol (N46B18A)
  • 316ti Petrol (N40B16)
  • 318 Ci Petrol (N46B20)
  • 318d Diesel (M47D20)
  • 318d, -td Diesel (M47D20TU)
  • 318i, -Ci, -LPG LPG,Petrol (M43B19TU)
  • 318i, -ti, -Ci, -LPG LPG,Petrol (N42B20)
  • 318i, -ti, -Ci, -LPG LPG,Petrol (N46B20)
  • 320d Diesel (M47D20)
  • 320d, -Cd Diesel (M47D20TU)
  • 320d, -td, -Cd Diesel (M47D20TU)
  • 320i, -Ci, -LPG LPG,Petrol (M52B20TU)
  • 320i, -Ci, -LPG LPG,Petrol (M54B22)
  • 323i, -Ci, -LPG LPG,Petrol (M52B25TU)
  • 325i, -xi, -ti, -Ci, -LPG LPG,Petrol (M54B25)
  • 328i, -Ci, -LPG LPG,Petrol (M52B28TU)
  • 330d, -xd Diesel (M57D30)
  • 330d, -xd, -Cd Diesel (M57D30TU)
  • 330i, -xi, -Ci, -LPG LPG,Petrol (M54B30)
  • M3 CSL Petrol (S54B32)
  • M3, -LPG LPG,Petrol (S54B32)
3-Series 2005-2013 44
  • 316d Diesel (N47D20C)
  • 316i Petrol (N43B16A)
  • 316i Petrol (N45B16A)
  • 318d Diesel (M47D20TU2uL)
  • 318d Diesel (N47D20A)
  • 318d Diesel (N47D20C)
  • 318i Petrol (N43B20A)
  • 318i Petrol (N43B20A)
  • 318i, -LPG LPG,Petrol (N46B20B)
  • 320d Diesel (M47D20TU2OL)
  • 320d Diesel (N47D20A)
  • 320d Diesel (N47D20A)
  • 320d Diesel (N47D20C)
  • 320d EfficientDynamics Diesel (N47D20C)
  • 320d, -Xd Diesel (N47D20C)
  • 320d, -Xd M Performance Diesel (N47D20C)
  • 320i Petrol (N43B20A)
  • 320i Petrol (N46B20B)
  • 320i, -LPG LPG,Petrol (N43B20A)
  • 320i, -LPG LPG,Petrol (N46B20B)
  • 320Si, -LPG LPG,Petrol (N45B20A)
  • 323i Petrol (N52B25A)
  • 323i Petrol (N52B25A)
  • 323i Petrol (N52B25A)
  • 325d Diesel (M57D30T2)
  • 325d Diesel (N57D30A)
  • 325i Petrol (N53B30A)
  • 325i, -Xi Petrol (N52B25A)
  • 325i, -Xi Petrol (N53B30A)
  • 325i, -Xi, -LPG LPG,Petrol (N52B25A)
  • 328i, -Xi Petrol (N51B30A)
  • 330d Diesel (M57D30T2)
  • 330d, -xd Diesel (M57D30T2)
  • 330d, -xd Diesel (N57D30A)
  • 330i, -Xi Petrol (N52B30A)
  • 330i, -Xi Petrol (N52B30A)
  • 330i, -Xi Petrol (N53B30A)
  • 335d Diesel (M57D30T2)
  • 335d Diesel (M57D30T2)
  • 335i, -Xi Petrol (N54B30A)
  • 335i, -Xi Petrol (N55B30A)
  • 335is Petrol (N54B30A)
  • M3 GTS/CRT Petrol (S65B44A)
  • M3 Petrol (S65B40A)
3-Series 2011-2020 35
  • 316d Diesel (B47D20A)
  • 316d Diesel (N47D20C)
  • 316i Petrol (N13B16A)
  • 318d, -xDrive Diesel (B47D20A)
  • 318d, -xDrive Diesel (B47D20A)
  • 318d, -xDrive Diesel (N47D20C)
  • 318i Petrol (B38B15A)
  • 320d EfficientDynamics Diesel (B47D20A)
  • 320d EfficientDynamics Diesel (N47D20C)
  • 320d, -xDrive Diesel (B47D20A)
  • 320d, -xDrive Diesel (N47D20C)
  • 320d, -xDrive M Performance Diesel (B47D20A)
  • 320d, -xDrive M Performance Diesel (N47D20C)
  • 320i EfficientDynamics, -LPG LPG,Petrol (N13B16A)
  • 320i Petrol (B48B20A)
  • 320i, -xDrive Petrol (B48B20A)
  • 320i, -xDrive, -LPG LPG,Petrol (N20B20B)
  • 325d Diesel (B47D20B)
  • 325d Diesel (B47D20B)
  • 325d Diesel (N47D20D)
  • 328i Petrol (N26B20A)
  • 328i, -xDrive Petrol (N20B20A)
  • 330d, -xDrive Diesel (N57D30A)
  • 330d, -xDrive M Performance Diesel (N57D30A)
  • 330e PHEV Electricity,Petrol (B48B20A+GC1)
  • 330i, -xDrive Petrol (B48B20B)
  • 335d xDrive Diesel (N57D30B)
  • 335i, -xDrive M Performance Petrol (N55B30A)
  • 335i, -xDrive M Performance Petrol (N55B30A)
  • 335i, -xDrive Petrol (N55B30A)
  • 340i, -xDrive M Performance Petrol (B58B30A)
  • 340i, -xDrive Petrol (B58B30A)
  • Active Hybrid 3 Electricity,Petrol (N55B30A)
  • M3 Petrol (S55B30A)
  • M3 Petrol (S55B30A)
3-Series 2019-2025 21
  • 316d Diesel (B47D20B)
  • 316d mHev 48V (MHEV),Diesel (B47D20B+JA1)
  • 318d Diesel (B47D20B)
  • 318d mHev 48V (MHEV),Diesel (B47D20B+JA1)
  • 318i Petrol (B48B20A)
  • 320d mHev, -xDrive 48V (MHEV),Diesel (B47D20B+JA1)
  • 320d, -xDrive Diesel (B47D20B)
  • 320e, -xDrive Electricity,Petrol (B48B20A+GC1)
  • 320i Petrol (B48B16A)
  • 320i, -xDrive Petrol (B48B20A)
  • 320i, -xDrive Petrol (B48B20B)
  • 330d mHev, -xDrive 48V (MHEV),Diesel (B57D30B+JA1)
  • 330d, -xDrive Diesel (B57D30A)
  • 330e, -xDrive Electricity,Petrol (B48B20A+GC1)
  • 330e, -xDrive Electricity,Petrol (B48B20B+GC1)
  • 330i, -xDrive Petrol (B48B20B)
  • M3 Competition, -xDrive Petrol (S58B30A)
  • M3 Petrol (S58B30B)
  • M340d mHev xDrive 48V (MHEV),Diesel (B57D30B+JA1)
  • M340i mHev, -xDrive 48V (MHEV),Petrol (B58B30B+JA1)
  • M340i, -xDrive Petrol (B58B30B)
Renew the coolant pump (09/1987 - ) 2h30
Renew the coolant pump ( - 08/1987) 1h30
Renew the coolant pump drive belt 1h00
Renew the coolant pump 3h30–4h00
Renew the coolant pump Rear-wheel drive 3h30

What is the function of a BMW 3-Series water pump?

The water pump circulates the coolant through the engine and radiators. Together with the thermostat, it maintains the engine within its operating temperature range. Most engines have a mechanical water pump driven by the timing belt or an accessory belt.

When should you change the BMW 3-Series water pump?

If the water pump is driven by the timing belt, it is strongly recommended to replace it at the same time as the timing belt kit. Signs of failure include: coolant leak from the pump weep hole, grinding or whining noise, engine overheating.

Is it difficult to change the BMW 3-Series water pump?

Difficulty level 2/5: technically easy if replaced as part of a timing belt kit change. If replaced independently, the timing belt must be removed and refitted, requiring engine timing tools.

View all compatible products →
View your 3-Series maintenance plan (keep the 3-Series token) →

7 models covered

Model Year Range Engines covered Fuel
3-Series 1975-1983 1975-1983 315 Petrol (M10B16), 316 Petrol (M10B16), 316 Petrol (M10B18), 318i Petrol (M10B18), 320 Petrol (M10B20), 320 Petrol (M20B20), 320i Petrol (M10B20) Petrol
3-Series 1982-1995 1982-1995 316 Petrol (M10B18), 316i Petrol (M10B18), 316i Petrol (M40B16), 318i Petrol (M10B18), 318i Petrol (M40B18), 318is Petrol (M42B18), 320i Petrol (M20B20), 320i Petrol (M20B20), 320is Petrol (S14B20), 323i Petrol (M20B23), 323i Petrol (M20B23), 325e Petrol (M20B27), 325i, -ix Petr… Petrol
3-Series 1990-2000 1990-2000 316g (65/75 kW) CNG,Petrol (M43B16), 316i (73/75 kW) Petrol (M40B16), 316i, -LPG LPG,Petrol (M43B16), 318i (83/85 kW) Petrol (M40B18), 318i, -LPG LPG,Petrol (M43B18), 318is Petrol (M42B18), 318is, -LPG LPG,Petrol (M44B19), 320i Petrol (M50B20), 320i, -LPG LPG,Petrol (M52B20), 32… CNG, LPG, Petrol
3-Series 1998-2007 1998-2007 316 Ci Petrol (M43B16TU), 316i, -Ci, -LPG LPG,Petrol (M43B19TU), 316i, -ti, -Ci Petrol (N40B16), 316i, -ti, -Ci Petrol (N45B16), 316i, -ti, -LPG LPG,Petrol (N42B18A), 316i, -ti, -LPG LPG,Petrol (N46B18A), 316ti Petrol (N40B16), 318 Ci Petrol (N46B20), 318d Diesel (M47D20), 318d,… Diesel, LPG, Petrol
3-Series 2005-2013 2005-2013 316d Diesel (N47D20C), 316i Petrol (N43B16A), 316i Petrol (N45B16A), 318d Diesel (M47D20TU2uL), 318d Diesel (N47D20A), 318d Diesel (N47D20C), 318i Petrol (N43B20A), 318i Petrol (N43B20A), 318i, -LPG LPG,Petrol (N46B20B), 320d Diesel (M47D20TU2OL), 320d Diesel (N47D20A), 320d Die… Diesel, LPG, Petrol
3-Series 2011-2020 2011-2020 316d Diesel (B47D20A), 316d Diesel (N47D20C), 316i Petrol (N13B16A), 318d, -xDrive Diesel (B47D20A), 318d, -xDrive Diesel (B47D20A), 318d, -xDrive Diesel (N47D20C), 318i Petrol (B38B15A), 320d EfficientDynamics Diesel (B47D20A), 320d EfficientDynamics Diesel (N47D20C), 320d, -xD… Diesel, Electricity, LPG, Petrol
3-Series 2019-2025 2019-2025 316d Diesel (B47D20B), 316d mHev 48V (MHEV),Diesel (B47D20B+JA1), 318d Diesel (B47D20B), 318d mHev 48V (MHEV),Diesel (B47D20B+JA1), 318i Petrol (B48B20A), 320d mHev, -xDrive 48V (MHEV),Diesel (B47D20B+JA1), 320d, -xDrive Diesel (B47D20B), 320e, -xDrive Electricity,Petrol (B48B20… 48V (MHEV), Diesel, Electricity, Petrol

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Easy 0h30–1h30
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Intermediate 0h45–7h00
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Very easy 0h30–0h30
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Easy 0h45–2h30
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Very technical 3h30–4h00
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Very technical 2h30–31h00
View the service schedule for your 3-Series →