Water Pump vs Coolant Pump

g_petko · 10-05-2015, 01:47 AM

Hey everyone,

First of all, terminology wise, are a coolant pump and water pump one in the same (I.e different terminology based on where you live)?

Looking at doing standard preventative maintenance by doing the 'water pump + thermostat', however I'm unsure as to whether this is technically changing the 'coolant pump + thermostat' as I've been on BMW catalogs and seeing conflicting info.

Thanks in advance.

kkasson · 10-05-2015, 03:31 AM

Yes, coolant pump and water pump should refer to the same part.

How many miles on the car? Some people recommend not changing it preventatively because it's somewhat random as to when they fail...some last upwards of 120k miles and others have failed at 25k miles.

Three_thirty_I · 10-05-2015, 09:54 AM

LOL, different names for the same things. Over here we refer to a hood as a bonnet, a trunk as a boot, a glove compartment is a cubbyhole. LOL

But yes, coolant pump and water pump as it refers to the cooling system on a car is one and the same.

Check on RealOEM for the corresponding part numbers, but I agree with the above. It depends very much on the age and mileage of the car, yours being a 2007 model could do with new parts if the mileage is very high. So what's the car's mileage at the moment? And has the coolant been changed every 2 years etc?

g_petko · 10-05-2015, 12:27 PM

Oct 07' build and done 230,000 km (~142,000 miles) and bought about 30,000 km ago however I did not ask the previous owner if he had changed them over or the coolant (didn't know it was something to ask about). This has lead me to wanting to change it over before I drive to Germany in about a month along with my next service (also includes replacing the coolant so prefect timing

)

LBIBMW · 10-05-2015, 03:48 PM

Do you typically do the thermostat at the same time as the water pump?

kkasson · 10-05-2015, 04:20 PM

Quote:

Originally Posted by LBIBMW

Do you typically do the thermostat at the same time as the water pump?

Yes. The thermostat has to be removed in order to access the pump anyway, so it might as well be replaced.

Three_thirty_I · 10-05-2015, 06:10 PM

At that sort of mileage, I think replacing the thermostat and coolant pump would be a good thing to do, it's only a matter of time before either one of those components will fail.

LBIBMW · 10-06-2015, 01:32 PM

Thanks, I had the water pump replaced but they never said anything about the thermostat. I wish they would have just gone and done them both.

10-05-2015, 01:47 AM	#1
g_petko Private 30 Rep 53 Posts Drives: 2007 e90 Join Date: Mar 2015 Location: Novi Sad, Serbia iTrader: (0) Garage List 2007 E90 [0.00]	Water Pump vs Coolant Pump Hey everyone, First of all, terminology wise, are a coolant pump and water pump one in the same (I.e different terminology based on where you live)? Looking at doing standard preventative maintenance by doing the 'water pump + thermostat', however I'm unsure as to whether this is technically changing the 'coolant pump + thermostat' as I've been on BMW catalogs and seeing conflicting info. Thanks in advance.
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10-05-2015, 03:31 AM	#2
kkasson Lieutenant 187 Rep 589 Posts Drives: 07 BMW 328i, 08 BMW 528i Join Date: Jun 2015 Location: CA iTrader: (0)	Yes, coolant pump and water pump should refer to the same part. How many miles on the car? Some people recommend not changing it preventatively because it's somewhat random as to when they fail...some last upwards of 120k miles and others have failed at 25k miles.
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10-05-2015, 09:54 AM	#3
Three_thirty_I Lieutenant Colonel 200 Rep 1,834 Posts Drives: '05 E90 330i Manual Join Date: Aug 2010 Location: Cape Town, South Africa iTrader: (0) Garage List 2005 BMW E90 330i [0.00]	LOL, different names for the same things. Over here we refer to a hood as a bonnet, a trunk as a boot, a glove compartment is a cubbyhole. LOL But yes, coolant pump and water pump as it refers to the cooling system on a car is one and the same. Check on RealOEM for the corresponding part numbers, but I agree with the above. It depends very much on the age and mileage of the car, yours being a 2007 model could do with new parts if the mileage is very high. So what's the car's mileage at the moment? And has the coolant been changed every 2 years etc? __________________ BMW E90 330i (M) '05 (His) \| (Hers) BMW E46 320i f/l (M) '03
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10-05-2015, 12:27 PM	#4
g_petko Private 30 Rep 53 Posts Drives: 2007 e90 Join Date: Mar 2015 Location: Novi Sad, Serbia iTrader: (0) Garage List 2007 E90 [0.00]	Oct 07' build and done 230,000 km (~142,000 miles) and bought about 30,000 km ago however I did not ask the previous owner if he had changed them over or the coolant (didn't know it was something to ask about). This has lead me to wanting to change it over before I drive to Germany in about a month along with my next service (also includes replacing the coolant so prefect timing )
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10-05-2015, 03:48 PM	#5
LBIBMW New Member 1 Rep 12 Posts Drives: 2006 325i Join Date: Oct 2015 Location: New Jersey iTrader: (0)	Do you typically do the thermostat at the same time as the water pump?
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10-05-2015, 06:10 PM	#7
Three_thirty_I Lieutenant Colonel 200 Rep 1,834 Posts Drives: '05 E90 330i Manual Join Date: Aug 2010 Location: Cape Town, South Africa iTrader: (0) Garage List 2005 BMW E90 330i [0.00]	At that sort of mileage, I think replacing the thermostat and coolant pump would be a good thing to do, it's only a matter of time before either one of those components will fail. __________________ BMW E90 330i (M) '05 (His) \| (Hers) BMW E46 320i f/l (M) '03
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10-06-2015, 01:32 PM	#8
LBIBMW New Member 1 Rep 12 Posts Drives: 2006 325i Join Date: Oct 2015 Location: New Jersey iTrader: (0)	Thanks, I had the water pump replaced but they never said anything about the thermostat. I wish they would have just gone and done them both.
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