I had an 2001 740iL that I traded an old truck for. The electronics are kind of a nightmare, the water pump has a plastic impeller that likes to randomly explode and shoot plastic all through the cooling system. You can buy one with a metal impeller that solves this.
It ended up being the water pump seal. They replaced the water pump and thermostat free of charge.
Electric water pump on my BMW was \u00a3436.54 fitted at a BMW specialist (not dealership) OEM pump fitted, the same pump for me to buy and fit myself (no chance) was \u00a3600+ on Euro Car Parts
I paid similar for a BMW TBF, however, another garage told me that the garage I went to was known for charging high prices. I always shop around when the price is in the hundreds so I'm confident I wasn't ripped off.
I've owned my 2013 535i M Sport since 2018 with 44k miles. Other than the regular maintenance items... 2021- oil filter canister gasket replacement -$ 800 ( I think. I can't find the receipt) 2024- passenger valve cover gasket- $660 Driver's door handle replacement -$250 2025- water pump and thermostat- $1750
I had my 2008 BMW 135i E88 for going on 14 years, it's about to hit 70k miles and looks like new. I've done a couple bolt-ones (IC, charge pipe, Cobb tune). It's been a great car and a blast to drive. I did replace the water pump this past summer otherwise normal maintenance.
I’m on year 3 of a 2020 M240ix and it has cost me nothing besides regular maintenance and premium fuel. Now I expect that to change soonish, as at my last oil change I was told my water pump has a very slow leak and, at some point, will need to be replaced to the tune of $2k.
Buy the M340i new and prepay your services. Great on gas but insurances and tires have been expensive. Water pump blew at 48k.
A 525tds was my first car. Only ever had two problems with it. Heater fuse kept blowing- turned out the previous owners install of the head unit used eletrical tape which over time lead to a cable shorting out on the din cage. Water pump died - oem impeller was plastic. The replacement was metal
The cooling system is the major weak point (ask me how I know) - water pump failed before 70k (changed under warranty)
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What we know about OEM BMW water pump
The brand is registered in Germany.
In March 2026, PartReview users have a mixed opinion of OEM BMW water pump.
PR Score — 68 out of 100, based on 28 reviews and 89 votes. 17 positive reviews, 5 neutral reviews, 6 negative reviews. Average rating — 3.4 (out of 5). Vote balance: 61 up, 28 down.
In the ranking of the best water pump this part is at position 5, behind Pierburg and Hepu , but ahead of GMB and OEM Toyota.
Users also evaluated the qualities of OEM BMW water pump:
- Leaks - coolant traces around the pump or from the weep hole - rated negatively. 2.1 points out of 5.
- Noise - whine or growl coming from the pump area - rated positively. 4.7 points out of 5.
- Overheating - temperature rises, especially with the a/c on - rated ambivalently. 2.6 points out of 5.
Water pump OEM BMW in car-specific ratings
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Water pump OEM BMW in comparisons
There are 11 comparisons of OEM BMW water pump with other manufacturers on PartReview.
In particular, see which water pump are better: OEM Toyota or OEM BMW, OEM BMW or GMB, OEM BMW or Saleri, AISIN or OEM BMW, OEM BMW or OEM Volkswagen .