Water pump and thermostat preventive maintenance?

atruelunatic · 08-16-2019, 10:02 AM

Hey guys, I'm at about 110,000 mi now and was wondering if I should change the water pump and thermostat as preventive maintenance.

What are some ill effects that could result in not replacing them? What happens when they die?

drrust · 08-16-2019, 11:18 AM

Thermostat can be changed relatively easily, so replacing as preventative maintenance makes sense. I had mine replaced when I had belts & tensioner replaced. This was two years ago at about 110 k miles.

Early this year got a low coolant level warning and checked around various areas and noted small puddle of coolant under the water pump. Replaced the pump at that time about 145 k miles.

08-16-2019, 10:02 AM	#1
atruelunatic Lieutenant 96 Rep 473 Posts Drives: n/a Join Date: Jun 2011 Location: Seattle, WA iTrader: (1)	Water pump and thermostat preventive maintenance? Hey guys, I'm at about 110,000 mi now and was wondering if I should change the water pump and thermostat as preventive maintenance. What are some ill effects that could result in not replacing them? What happens when they die? __________________ 2011 e92 JzB 6MT Akrapovic Evolution, ESS Tune, KW V3
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08-16-2019, 11:18 AM	#2
drrust Captain 336 Rep 724 Posts Drives: E90 M3 DCT Sedan Join Date: Jun 2016 Location: Cincinnati iTrader: (0)	Thermostat can be changed relatively easily, so replacing as preventative maintenance makes sense. I had mine replaced when I had belts & tensioner replaced. This was two years ago at about 110 k miles. Early this year got a low coolant level warning and checked around various areas and noted small puddle of coolant under the water pump. Replaced the pump at that time about 145 k miles.
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