Pierburg BMW Auxiliary Water Pump

This is the high quality Pierburg electric water pump for F30 F32 F22 models with the N55 6 cylinder turbo engine. The electric water pumps on older N54 and N55 engines tended to be failure prone. The N55 water pump is electrically driven and varies output based on instructions from the engine computer. Under the best circumstances the pump drives only as much coolant as needed and will shut down or activate as load and performance demands change (combustion chamber temperatures are dynamically changed based on economy, normal, and performance demands). The pump can also run when the car is off to reduce heat soak in the engine and turbo(s). The water pump is now a factor in how much power and fuel economy your car is producing, making it all the more critical to replace during normal maintenance. If a fault or excessive temperature is reached, the dash cluster will display a yellow or red water temp icon depending on the severity of the condition. The car's electronics will begin shutting down various systems in the car to divert more resources to the cooling system. This can include reducing power output and activating 'limp mode'. The best way to avoid problems and system failures? Preventative maintenance and overhaul of the cooling system, starting with the water pump (and thermostat). NOTE: ONLY for cars with M Sports Package - option code P337A This item fits the following BMWs: 2012+ F30 BMW 335i 335i xDrive - Sedan 2013+ F32 BMW 435i 435i xDrive - Coupe 2013+ F33 BMW 435i Convertible 435i xDrive Convertible- Convertible 2014+ F34 BMW 335i xDrive GT - Gran Tourismo 2014+ F36 BMW 435i Gran Coupe 435i xDrive Gran Coupe