BMW M4 Water Pump & Thermostat Replacement DIY (2015-2020 BMW F82, F83 M4, F80 M3, F87 M2 CS, Comp)

►BMW's history with water pumps and cooling systems isn't the best. However, the mechanical water pump BMW uses on the S55 engine in the M3 and M4 is actually quite reliable. Instead of regular replacements, you'll only have to replace your water pump and thermostat at the standard interval. Failing to replace either component can lead to cooling system issues that can overheat the engine.

The S55 uses a mechanical pump driven by a belt. The engine thermostat is also a simple mechanical type, ensuring both areas are relatively trouble-free. The replacement is an involved process, but nothing overly significant. Just ensure you have drain pans on hand to catch the engine coolant that must be drained.

In this video, FCP Euro's Professional DIYer, Mike Hidalgo, replaces the water pump and thermostat on a BMW F82 M4.

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This video applies to the following vehicles:
BMW M3
2015 BMW M3 Engine Water Pump
2016 BMW M3 Engine Water Pump
2017 BMW M3 Engine Water Pump
2018 BMW M3 Engine Water Pump

BMW M4
2015 BMW M4 Engine Water Pump
2016 BMW M4 Engine Water Pump
2017 BMW M4 Engine Water Pump
2018 BMW M4 Engine Water Pump
2019 BMW M4 Engine Water Pump
2020 BMW M4 Engine Water Pump

BMW M2
2019 BMW M2 Engine Water Pump
2020 BMW M2 Engine Water Pump
2021 BMW M2 Engine Water Pump

00:00 - Intro
02:26 - Tools Needed
03:54 - Draining Coolant
13:44 - Engine Brace, Covers, Air Box Removal
18:09 - Fan & Radiator Removal
22:50 - Water Pump & Thermostat Replacement
32:50 - Radiator & Fan Install
42:00 - Underbelly Pan Install
45:09 - Engine Brace, Covers, Air Box Install
50:52 - Filling with Coolant
53:41 - Wrap-up

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