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Change Car Water Pump

Easy 1h30–5h00 ~150–500£
Estimated time 1h30–5h00
Estimated labour cost ~150–500£
Difficulty Easy
Vehicles
Forfour 2004-2006 4
  • 1.1 12V 75 Petrol (134.910)
  • 1.3 16V, -LPG LPG,Petrol (135.930)
  • 1.5 12V CDi Diesel (639.939)
  • 1.5 Turbo BRABUS Petrol (122.950)
Forfour 2015-2025 4
  • 0.9 Brabus Petrol (281.910 (H4B))
  • 0.9 Petrol (281.910 (H4B))
  • 1.0 Petrol (281.920 (H4D))
  • 1.0 Petrol (281.920 (H4D))
Renew the coolant pump Hatchback, 3 doors 2h00
Renew the coolant pump Hatchback, 5 doors 2h00

What is the function of a Smart Forfour 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 Smart Forfour 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 Smart Forfour 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.

2 models covered

Model Year Range Engines covered Fuel
Forfour 2004-2006 2004-2006 1.1 12V 75 Petrol (134.910), 1.3 16V, -LPG LPG,Petrol (135.930), 1.5 12V CDi Diesel (639.939), 1.5 16V Petrol (135.950), 1.5 Turbo BRABUS Petrol (122.950) Diesel, LPG, Petrol
Forfour 2015-2025 2015-2025 0.9 Brabus Petrol (281.910 (H4B)), 0.9 Petrol (281.910 (H4B)), 1.0 Petrol (281.920 (H4D)), 1.0 Petrol (281.920 (H4D)) Petrol