This can be helpfull holding the water pump pully while removing the fan nut. (reverse thread)

I got mine from elpaso tools, but there are many others on ebay.

This makes the job a little easier.

I would at least replace the upper and lower hoses. The plastic connectors will fail. If reusing the water temp sensor, replace the small o ring or that will weap.

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Luke
95 525ia
01 X5 4.4
1965 Pontiac Lemans Convertible (resto mod)