water pump for z4 e85 3.0 2004

A

ajs01

Member
hello - novice question so apologies in advance! I understand its a good idea to replace the water pump on the z4, my car is a 3.0 2004 non facelift with circa 89k miles - when I search for info there is a inexpensive and expensive option. What make/model should I be replacing it with and can you tell if its already been replaced by a visual inspection? Also can you check your drain holes from the top without taking the wheel off etc etc - thanks a lot for your help
 
Im on the original water pump 2005 2.5se M54 engine on 11500k miles no issues ,i have replaced the thermostat though due to a leak
The drains - pour water down the side of the hood and if its dips out the bottom in from of the rear wheels there ok
 
ajs01 said:
hello - novice question so apologies in advance! I understand its a good idea to replace the water pump on the z4, my car is a 3.0 2004 non facelift with circa 89k miles - when I search for info there is a inexpensive and expensive option. What make/model should I be replacing it with and can you tell if its already been replaced by a visual inspection? Also can you check your drain holes from the top without taking the wheel off etc etc - thanks a lot for your help
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Don't get confused with the electric pump on the N52 that can fail with no warning. Your pump is belt driven. if you take the top of the expansion tank and run the engine, you should see water squirting into the top of the tank. This shows the pump is flowing coolant ok.
Apart from that, monitor it for strange noises and watch to see if you get any water dripping from the underside, signifying a worn bearing/seal.
If you wanted to have one to hand, just in case, then the usual suspects are the ones to get: Meyle, Mahle, Febi Bilstein etc.
 
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