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E60 545i, E63 645ci (Auto Transmission) Cooling Overhaul Package

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The cooling system is one of the major weak points on the N62 engine in the 545i and 645ci. The water pump itself won't last more than 100,000 miles in most cases and the engine itself is prone to coolant leaks from multiple locations. So a major 545i cooling system overhaul should be planned before the 100,000 mile mark. Aside from obvious leaks the 545i water pump will also squeal or screech indicating the bearings inside have worn. This package covers the water pump, thermostat, and radiator for the 2004-2006 E60 545i and E63 645ci with an automatic transmission.

The entire cooling system on the 545/645 is susceptible to leaks and poor performance. The condition of the rest of the cooling system should be considered along with the water pump and thermostat. Replacing the water pump will expose the front of the V8 engine where more problem areas may appear so plan accordingly. The biggest problem is the V8 valley pan gaskets and inner coolant tube seals. The tube carrying coolant through the valley is prone to leaking and replacement is a major job (see our valley pan pipe kit here). Additional items recommended to be replaced during the water pump job are: cooling hoses, expansion tank and cap, temp sensors, drive belts, and pulleys and tensioners.

Base 545i Cooling Package includes:

  • OEM Behr radiator (17117585440)
  • OEM water pump (11517524551)
  • water pump pipe (back of pump to engine block) (11511439976)
  • OEM thermostat (11537586885)

    This item fits the following BMWs:
    2004-2006 E60 BMW 545i with automatic transmission
    2004-2006 E63 BMW 645ci with automatic transmission

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This Part Fits the Following BMWs

Make Model Submodel Engine
BMW E60 545i N62 4.4L
BMW E63 645Ci N62 4.4L
BMW E64 645Ci N62 4.4L
*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.
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