This video is a part of a coolant system rebuild on my E36 BMW. 

E36 Coolant Level Sensor: advanceautoparts.rt8x.net/Lbz9V
E36 Aluminum Thermostat Housing: advanceautoparts.rt8x.net/2xGog
E36 Beck Arnley Water Pump: https://amzn.to/32FLIN5

The Water Pump was the most important part of the replacement, and is generally pretty easy to remove and replace once you have removed everything in the way.
Remember that it's an extremely good idea to put some lithium grease anti-seize around the bolt holes on the new water pump, so there is a reduced risk that it will be seized whenever it needs to be replaced again.

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