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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Discuss problems you have had or are having with your Z4
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Steve84N
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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Steve84N » Thu Apr 21, 2016 2:08 pm

Smartbear wrote:
Dietcokeman wrote:Yep I bought a car from this very forum last year for a friend as she loved my car. Car was well cared for and looked after, and had done 82k .........fast forward 2k miles and the pump failed . She took it to and Indy who charged her 650 for a new pump and thermostat . This was a 2.5si . The N52 engine being ally needs a higher flow pump hence the electric addition and additional cost, it's the engines Achilles heel to be honest other than that they are pretty good motors .
Hi, the n52 engine is magnesium not ally & that's not the reason for the electric water pump-it's there to reduce emmisions & increase power by reducing parasitic loss.
Rob
It's not simply magnesium, in actual fact the important bits are aluminium and magnesium is just used for the main bulk of it.

The N52 engine block is cast with magnesium and aluminum for the crankcase. Magnesium is used to save weight, however magnesium is subject to a greater risk of corrosion from water. Moreover, magnesium may tend to creep under load at high temperatures. Thus, magnesium in its pure form or as a conventional alloy is not suited for permanently conveying high loads and forces of the kind typically encountered in central components of the engine. Therefore, BMW combined the N52 block to use magnesium alloy for the crankcase shell, with an aluminum “inner block” to complement the magnesium disadvantages.
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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Smartbear » Thu Apr 21, 2016 2:53 pm

That's what I meant of course :D
Rob
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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Steve84N » Fri Apr 22, 2016 8:51 am

You were both right...sort of. :D
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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Zeddicus » Thu Sep 15, 2016 10:32 am

Hi All,
Don't want to open another thread for this well known problem with water pump on our Z4, but since I have just faced it on my 3.0SI, I'd like to get your feedback on this price quoted by BMW dealer (in France):

Water pump + thermostat replacement:
Labour & parts: €1'200.0 (approx. £1'020.0)

They have a very expensive manhour = €98.0 per hour (£83.0), which maybe higher than in UK. However I still feel scammed by the price given to me on the phone...
Job is done, cause I need the car back with me urgently. But by just checking what everyone seems to refer to on the forum (between £700-900 for the job), I am wondering why these guys are so expensive here.

Does anyone remember the time used by BMW technicians for replacing both parts?

Cheers.
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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Steve84N » Thu Sep 15, 2016 1:02 pm

Broadly £400 for the pump tops and 2-4hrs labour would be more reasonable.
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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Hilly30si » Thu Sep 15, 2016 3:59 pm

Got me worried now as mine is coming up to 60k. Trawled the net for the parts cost, and got a great price, not more then 12miles from me in Wolverhampton. OEM Water Pump, New Bolts, Thermostat and hose £315 all in inc vat. :thumbsup: Ring Sam on 01902 858927.
Last edited by Hilly30si on Thu Sep 15, 2016 4:35 pm, edited 1 time in total.
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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Smartbear » Thu Sep 15, 2016 4:06 pm

Hilly30si wrote:Got me worried now as mine is coming up to 60k. Trawled the net for the parts cost and got a great price not more then 12miles from me in Wolverhampton. OEM Water Pump, New Bolts, Thermostat and hose £315 all in inc vat. :thumbsup: Ring Sam on 01902 858927.
If that price is correct then it's much cheaper than normal :thumbsup:
Rob
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e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Hilly30si » Thu Sep 15, 2016 4:40 pm

Go Here

http://bmpartsstore.com/bmw-cooling/bmw ... 0wodQ-0Jjg

I telephoned the local number and not the one in big numbers on the website. Its the one in my earlier post, speak to Sam :D
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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Scooba_Steve » Thu Sep 15, 2016 4:48 pm

At that price they must surely be recon?
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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Zeddicus » Thu Sep 15, 2016 7:42 pm

Got my car back this afternoon, and I must say, I was glad to have the problem gone.

Now as for the price, there I was also (slightly) relieved when I saw the figure on the invoice: €1'074.0 instead of the 1'200.0 announced!

Since I thought this type of task was rather straight forward and BMW for sure would give me a precised quote, I was not expecting to see anything lower. Obviously the technician preferred to approach me with a bigger number to then reduce it in the end... don't know exactly the reason behind this at the point were I was, I was anyway going to say "go-ahead, I need my car back"!

Here the price breakdown - in Euros, in case someone would happen to need a water pump/thermostat during holidays in France :P

Water pump: 538.0
Thermostat: 127.8
coolant fluid/bits and pieces of hardware: 41.71

mhrs: 3 = 294.0
And the rest was for plugging the fault code reader and drive test.

Worse thing is they left the car rather dirty inside with a big footmark on the clear carpet, guess BMW dealer aren't providing a premium service any longer :?
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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Hilly30si » Fri Sep 16, 2016 9:31 am

Scooba_Steve wrote:At that price they must surely be recon?

No Steve 100% brand new parts
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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by MK85 » Fri Sep 16, 2016 12:38 pm

Well mine just went the other day so if you have doubts it's best to change it, these engines aren't cheap second hand.
Parts cost £290 for pump and thermostat off some bmw parts store on ebay. I've seen cheaper in Germany but I need it ASAP.

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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Scooba_Steve » Fri Sep 16, 2016 1:08 pm

Hilly30si wrote:
Scooba_Steve wrote:At that price they must surely be recon?

No Steve 100% brand new parts
They don't explicitly state that though - happy to be proved wrong as they are a steal if new.
3.0si Sport: F10 Illuminated ZHP, Retrofit Cruise, OE Stubby, Gaptech RCH+, Kenwood BT73DAB + Handsfree, HIDs, LED Sidelights, OE LED Number Plate Lights, Custom LED strip bootlight.

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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by Hilly30si » Fri Sep 16, 2016 3:32 pm

I phoned the owner this morning to confirm, he stated the pumps are new and will stand any scrutiny, or your money back. I for one will be ordering my set and getting them fitted by my independent :thumbsup:
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How many of you have replaced your (N52/2.5/3.0) Water Pump?

Post by andystone » Fri Sep 16, 2016 9:08 pm

For my own knowledge, what year is/was/are these engines? Model specific? Ta
2005 e85 z4, 2.5

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