Part 2 Replacing the electric water pump on late model BMW N-series 6 cylinder engines

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In Part-2 of this two part series, we will install the electric water pump and thermostat on a typical late model BMW with the N-series 6-cylinder engine We will be using an E90 335i, but these general procedures will apply to most models that have the N engine. See Part-1 for the removal.
The Bentley repair manuals will cover model specific points, torque values and fill quantities. This DIY will assume that the DIYer has the applicable Bentley manual for additional references.
Since the thermostat resides beside the water pump, and the pump must be removed in order to replace the thermostat, we highly recommend that the thermostat be replaced when the pump is replaced. We normally would also recommend that the coolant hoses be replaced while the system is drained. However, in these models the only hose that is readily accessible for replacement is the thermostat to water pump hose. We would suggest replacing this hose, but the others would require quite a bit of additional work.
PARTS USED:
• Water pump
• Water pump mounting bolts
• Thermostat
• Thermostat to water pump hose
• Various size hose clamps
• O-ring assembly lubricant
• BMW coolant
• Distilled water
TOOLS USED:
• 3/8" drive E-Torx socket set
• Flex shaft hose clamp driver
• Spill-Free coolant funnel
• Form-A-Funnel
• Garage Guard absorbent mat
• 3/8" drive sockets, universal joint, extensions and ratchet, 8mm -- 13mm
• 17mm open-end wrench
• Various flat-head and phillips screwdrivers
• 10-amp battery charger
PROCEDURE:
1) Safely and properly raise and support the front of the vehicle. This repair task can be performed with the vehicle on jack-stands or using drive-on ramps.
2) Remove the forward under-chassis splash panel.
3) Disconnect the power steering cooler hose assembly mount on the passenger side and move the hoses rearward and toward the driver side. Use a piece of wire or a cable tie to hold the hose assembly out of the way.
4) Remove the two mounting nuts on each swaybar mount and lower the swaybar. Move the bar toward the rear of the vehicle and tie it up with a section of wire or a cable tie.
5) Remove the water pump harness plug wiring connector plug.
6) Place the coolant catch pan under the water pump. Using the flexible hose clamp driver, loosen the hose clamp on the thermostat to water pump hose (the nipple that is facing the rear of the vehicle) and carefully pull the hose off the water pump inlet nipple. This will drain most of the coolant that is in the water pump, thermostat and local hoses.
7) Use the flex driver to loosen the water pump outlet (supply) hose. The hose nipple points toward the passenger side and is above and to the rear of the thermostat (look at the new water pump to help locate the nipple and hose). We cannot remove the hose as it is solidly mounted. We will pull the water pump from the hose, in step # 13.
8) Remove the two lower water pump mounting bolts, using an E12 Torx socket.
9) Place the coolant drain pan under the forward end of the thermostat and water pump. Disconnect the radiator to thermostat hose (large plastic hose elbow at the forward end of the thermostat) by pulling out the locking wire on the quick disconnect fitting and pulling the fitting off of the thermostat nipple. Allow the coolant to drain.
10) Remove the two thermostat mounting bolts.
11) Pull the ground cable from the mounting clip that is affixed to the water pump rib, just forward of the upper water pump mounting bolt. Look at the new pump and use a light to locate the ground cable and the clip. Pull the cable out of the clip and push the clip off the rib (toward the passenger side), using a long screw driver.
12) We're sorry, but the description can not be any longer (youtube requirement). Watch the video and see our tech blog for the full DIY steps at blog.bavauto.co...
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All products noted in this video can be purchased in our online store, www.bavauto.com/, 24 hours a day, 7 days a week. You are also welcome to e-mail us at [e-mail] or call into our headquarters and speak to our knowledgeable advisors at [phone] (Mon.-Thurs. 8AM to 9PM EST, Fri. 8AM to 7PM EST, and Sat. 9AM to 4PM EST).

[@kandersen1991]

Most difficult part was getting my car on the ramps. 07 335i, took roughly 4 and a half hours, following this video, step by step. Thanks a bunch, you were an integral part in saving me well over $1100.

[@vikingmike8139]

Does your 335i have turbos?

[@gemsix876]

They all do

[@fozzydj99]

Kyle Andersen I did mine (same car as yours) on axle stands 😂 stiff neck dot com! 2 hours off, about an hour putting new one in

[@p1v0t1ng]

Hi Otto, Thanks a lot for the great video! I think it helped me and many others a lot, especially where and how to remove the third bolt... There are two things I'd like to add: 1) I would recommend to drain the majority of the coolant through the drainage screw on the cooler (there is either one screw on one side of the cooler or one on each side). Here, the coolant can be drained quickly and with less spillage. Tighten the drainage screw very carefully (only 3 Nm!) 2) I found it easier to get access to the small quick disconnect hose from the engine bay (maybe the reason is that I don't have an auto hoist and had to work in the usual difficult diy position). It was a really annoying job to do but now it is done. Anyone who is unsure whether he can do it just be aware that Otto is a professional and the video shows the procedure in a very smooth way. It will not be that easy doing it yourself for the first time but anyone who does some service and other work on his car regularly should be fine. You should have enough time, as well. I needed 6 hours to do the job.

[@gjd9527]

Thankyou Sooo much, its a beautiful day here in NZ, I've just replaced the pump and thermostat @ 113,000 km... system is bled and now enjoying a cold beer. I really wasn't looking forward to doing this job but its done. Thanks again

[@akaBlnk]

Gareth Davies I cant relate to something more lol just got done with replacing my waterpump and feel the exact same hahaha

[@robert4196]

Thank you BavAuto and Otto for these great water pump videos #1 and #2. With your assistance I was able to replace the pump and thermostat in my '06 325i. Lots of challenges along the way like reaching that third torx bolt on the pump and then getting the hoses back on. That clip on the front hose to the thermostat fell off and landed inside the fan shroud. Nice. So I learned how to remove and replace a fan too which was remarkably easy. Having the fan out made access to that hose connection easier. Did the front pads and rotors while I had the car up and replaced the battery too. Thank you again!

[@UCanDoIt2Mike]

Thank you for this absolutely fantastic video. We were able to follow your steps easily and found the process a little time consuming, but very easy! Anyone that gave this video a thumbs down is a useless keyboard mechanic. The amount of time that you put into producing this series is greatly appreciated! Thank again!!!!! Thumbs Up!!!!!

[@JohnDoe-it4kw]

This video made this job so easy! I needed this work done RIGHT NOW and without this video I would have been completely lost. Detailed information and step by step directions that didn't miss anything. Saved me 12 hundred bucks and got me out of a jam. BavarianAuto got a new customer. Thanks guys!

[@faust451]

Thank you very much for these two videos, fantastic explanation every step of the way. I did this job on an e92, RWD with the N54 but on ramps. It is doable on ramps, but a lift would make the job much more comfortable. Replacing the top water pump bolt was the toughest part for me as my aftermarket intercooler takes up more space than the stock intercooler. A cold beer and some patience, I was able to blindly get the bolt mounted and started with one hand.

[@battlehrfred]

Just WOW on this professional at work!! 100--100 amazing

[@michaelsiebesma4535]

By far the best BMW related DIY video on the web. Excellent presentation covering all the little frustrating nuances. AAA plus. Thank you for your help.

[@Shinobi117]

Agreeed

[@billyvines4644]

What a great 2 part Video… you built my confidence and I took a crack at it. Hardest part of the job for me was getting the bigger quick disconnect off of the darn thermo! And putting it back on the new one. But I didn’t give up and finally it came free. All you need is some good ol elbow grease, thank you so much for this lovely diy. you are a life saver!

[@JeffCdeBaca]

This guy is so thorough and describes every step and concern very well. Thank you very much, so helpful!

[@pinktacoetr]

I just did my 335i from watching this video and it really isn't too bad patience is key. I took my time and it took 4 hours on jack stands. I recommend new hoses while you have them removed.

[@demetriusjohnson7773]

Great diy video. I was able to change mine taking my time and having lots of light. Removing the coolant fan really helped me gain some extra space.

[@buzz-lh6rc]

Thanks for the awesome video. 2008 335I here, got the thermostat, pump, bolts, gallon of BMW coolant all for $450 from bavauto. Saved me paying the dealership $1100 in labor!

[@flexspec]

Doing this job on Monday - will definitely be using this guide

[@pchon66]

I am very thankful for this diy. Dealership quoted $1,200. to replace water pump on our 325i 2006 with 58k. After watching this video it gave me enough confidence to do it myself. I did it on 8” ramp. Got new pump and thermostat ($450.). It took me about 3h and it was fairly easy to do. Must say lubing inside pipes and nipples (vaseline in my case) as recommended in this diy is a must.

[@bobobobobobs]

Removing the fan helped me to easily get access to the third water pump bolt, no way I could reach that otherwise. (2007 e92 335i). Thanks for the awesome video

[@robertmarshall22]

Thank you so much for this video. One of the things that tends to go bad is now less scary to deal with

[@boodlehopper]

You did a great job on the entire removal and installation! Thanks a lot and keep these great reference videos coming. Thanks from Jim Walters Z-4 owner

[@bavarianautosport]

Thanks for the good words, Jim!

[@johnd.6951]

Thanks so much for doing this video. To other viewers- Don't let the dealership scare you when they say this is hard to get to. This IS a pretty easy replacement as long as you have the U-joints, extensions, and Torx socket. Thanks BavAuto! You saved me about $600!

[@bavarianautosport]

Glad we could help, Dave!

[@michaelold4173]

Very well done video. I would suggest that the correct orientation of the water pump-to-thermostat hose (11537521049) can be set by performing a trial fit on the bench. Temporarily bolt the thermostat to the water pump and install the hose on the assembly. Cinch down the end attached to the thermostat and unbolt the water pump. Then proceed with the thermostat installation.

[@SpeechScience421]

Thank you! What an excellent video. I just finished the job and couldn't have done it without this clear, step-by-step demonstration. It worked with the car on ramps, but a hoist would definitely have made the job easier :)

[@kazshamael]

I used this video as a reference to replace the thermostat and it proved to be extremely helpful. My father-in-law gave me his '07 335i and while looking through the service records, I saw that the water pump was replaced 6 months ago but not the thermostat. Why they didn't just replace the thermostat while they were down there is beyond me. I'm assuming the dealership knew he'd be back in 6 months to get it replaced. **If you plan on only replacing the water pump, please do yourself a favor and replace the thermostat too! TRUST ME!** Anyways, as dumb as this sounds, the most labor intensive and time consuming part for me was reattaching those 2 "quick"-disconnect hoses. I didn't have enough room to get both hand up there and effectively push them together. Four hours later, I heard the first hose click into place and almost started crying from joy. I don't understand BMW's logic behind some of these repairs (why did I have to remove the radiator to change out my tensioner pulleys!?) but man, do I love these cars.

[@rcmojon6]

Terrific instructional video. Best I've seen to date. Thanks for saving me hundreds! Now I just hope my job goes as well as yours.

[@teamlaguna]

What a TOTAL pain in the ASS of a job ! No fun here , but it's done . Thanks for the pointers :-)

[@antwalk7772]

Bolts and hose.

[@michael930turbo]

Thank you so much for posting this! I had a lot of questions on how to do this job--you answered everyone of them. Thank you for being so thorough.

[@johndaniel8955]

Did it Saturday on 2009 335i; very straight forward, even on jack stands. Great instructions and tips. Take care to not cross thread aluminum bolts into block. Didn't need to complete bleed procedure. This will definitely drain battery if not using charger as shown.

[@fredpusey963]

Awesome video and thank you! Very, very helpful and the best video showing how to replace a water pump!

[@bavarianautosport]

The bleeding process requires the full ignition to be on and the pump to be running. This can reduce the battery voltage to the point where the vehicle power management system starts to shut down systems and throw faults.

[@dimitarttt]

Thanks so much for this very detailed videos! It saved my butt 5 years later in 2018!

[@Mango_Productions]

39 BMW service dealers disliked this video lol. Thanks for the video again, helped me as well.

[@nickr5658]

This job was HELL on my e90 328xi. The subframe is totally different and blocks access to the hose clamps and makes disconnecting the snap fittings near impossible. Here is what I learned from doing this project. 1. Remove right front wheel 2. Radiator does not need to be removed. Some people said it made it easier, the connections are all brittle and are stuck on. There is enough room to work without removing the radiator. 3. Remove the aluminum stiffener plate. You can't get to the pump with out removing it. 4. Use silicone grease on all orings in the snap connections. You might even use a bit on the hose connections. 5. Make sure to disconnect the battery. My e90 has some parasitic draw when the hood is open. 6. Do a practice fit with the old pump and water pump. The hoses will self align. Tighten everything once on the car. 7. When you bleed the pump, make sure you close the bleeder screw and radiator cap. Some diys say to loosen the bleeder screw when bleeding the system.

[@danfratamico]

Nick, I'm planning to replace the water pump and thermostat on my '07 335xi sedan. I did a quick glance underneath and it looks nearly impossible to get to. Were you able to loosen the bolts from the wheel well?

[@LCI335]

Daniel Fratamico i just did my 335xi N55 e90 without removing any wheels. Probably would be easier to remove it. Im a skinny guy so i was able to fit my hands around the back to get those hoses off & it was a bitch. The worst part is the screws on clamps were facing downwrd and no room at all to get to. I had to bend the hoses to turn the thermostat to face me so i can unscrew the clamps. It took me 10 fuckin hours. Probably 8 hours takinng the thing out & 2 hours putting it in. I also put the screws facing me for next time (i hope theres no next time) to make a 10 hour job a 3 hour job. What a terrible spot the pump is in on the 335xi smh. Also to mention i worked with the front of the car jacked up, so that also made it a bit hard.

[@Galileo9.81]

This is an awesome, by far the best water pump/thermostat replacement diy video. I have always worried about replacing this myself but not worried at all any more. Will def purchase those parts from bavauto. bavauto rocks!!!

[@raphaeloffodile3906]

Best instructional video on the web. You are great.

[@rustyshackleford6259]

Yall are great! DIY makes owning a BMW just that much better :)

[@b67fstb]

You can mount the hoses in the lock position as they do in the factory. You should hear the "click" when seated the right way.great video.

[@Glofilter]

Thanks so much for this. I would have been completely lost. Had to do it in my garage, with the car on jack stands, but managed to finish it and saved myself about $800. Much appreciated.

[@waggs6585]

Excellent DIY. Waiting for my parts to arrive so I can tackle this job. Scenario is the same for me as everyone else, overheat yellow straight to red. Without the thorough breakdown of this procedure, I don't think I would be confident in taking on this job. I've been reading a lot of forums and it looks like replacement costs vary from $700 - $2000 for this job depending on the shop, I can't thank you guys enough for this knowledge. Bavauto has my business from here on out :)

[@bavarianautosport]

Thank you Jason. We're glad to help you enjoy your BMW ownership!

[@darrylsaundry4618]

Great step by step instructions, helped one of my tech's out a lot. Thanks again. Very little info was available using Mitchell or Alldata.

[@crowman282000]

Very nice video, helped me make quick work of this problem.

[@dougrobinson8602]

Great video. I'm getting ready to do this job. BTW, if you have a Foxwell 510 scan tool, you can verify the pump rpm during the bleed procedure. The pump is hard to hear, at least for this old mechanic!

[@samnixon6198]

Excellent as always!

[@MrOMGROFLMAO]

great video! saved me a ton of money on my 06 330i which had the pump go a 110k...well not a lot of money..the pump is $800 up here in Canada..but at least I didn't have to take it in to the shop :D Cheers!

[@markstrommen1831]

I am working one of these with a over heat problem thanks for putting this out way different then their older cars symptoms are the same no flow at the bleeder so either the pump failed or the power supply this save me some stress

[@DrunkPuto]

Awesome video best DIY great job and Thank you!

[@MrSsurbaugh]

Thanks for the great videos. One reason I always try to buy from Bav Auto.

[@BrokerJohannes]

it was HELL on a 530xi with the AC hose in the way and after well 8h of shouting of frustration the job was complete! saved me a lot of money

[@dougrobinson8602]

Well, you got paid about 100 dollars per hour of frustration. That should make you feel better. Plus the satisfaction of a job well done, and more intimacy with the underside of your engine bay. Congrats on all counts!

[@anashedpotato]

Thank you for this! Saved me some money doing it myself.

[@mike36076]

Thanks it really help me , plus save me money. My car runs great now...

[@bavarianautosport]

Must admit .... time for an underhood bath, for this one!

[@calebwkimani7153]

God bless you for such an awesome intellectual mind a BIG thumbz up for yar.

[@stewloft2382]

Great job. Thank you very much.

[@gjevolves]

Excellent and very helpful.... Please keep up the brilliant job.

[@izyfication]

Thank you for the DIY , great job !

[@bumcanothy]

You are Amazing Mister

[@fozzydj99]

Thanks for this. Although on my 335i E92 the space was a hell of alot tighter. Got it done though

[@scatpack1381]

Great video Is there a better quality water pump that will last longer?

[@Galileo9.81]

Guess what! Just applied a bit of old oil to the rubber ring gasket inside of the quick connect hose then pushed it towards the thermostat then it poped in like a charm. Thank you Otto and Bavauto.

[@bavarianautosport]

Great!... replied basically the same thing to try, in your first comment, below.

[@Galileo9.81]

BavarianAuto thank u Bavauto for quick replies. U earned my business! I wish i could quit my job and work for u with such good people. Your people r the greatest asset and i wish i could be part of the team.....only if u could move down here in the south...lol

[@bavarianautosport]

Stig Bimm There are day that we wish we could move down south as well!

[@Galileo9.81]

Stay warm this weekend. People r nuts about the upcoming cold front here in ATL.

[@bavarianautosport]

Stig Bimm - looking at possible snow for tomorrow ......

[@2tyyep]

thank you this video heip me alot.

[@kashill1]

This video was very helpful BTW.

[@bavarianautosport]

Glad we could help, Steve!

[@josevalentin3990]

Bavauto Please, Please Please do a video for the 5 series xi models.

[@oishirley]

I literally understood the installation more than the removal.

[@evoezepeda]

Nice job man

[@123heraz]

Thanks My teacher

[@Bavarian_M]

Great video!!!!

[@makemoneyonline8793]

This is the best water pump and thermostat installation and removal i've seen on youtube.

[@aleung1946]

You are the best

[@AliAuto101]

Thank you very much Very helpful video .

[@eo8690]

Sorry didn't see that! Thanks!

[@ziadin5366]

great work

[@MPOWERM6]

well don.. great job

[@bavarianautosport]

Thank you!

[@alexf8657]

hi.. first of all, perfectly accurate DIY instruction. thumbs up on that.. I've one question though.. during the bleeding process (approx. for the first 6min) the water pump was really loud and it sounded as it ran dry like there were no water but only air inside.. I could hear the water circulate though... Does it suppose to sound like it? I wasn't present all the time till the end of the process though.. but when I returned, it didn't sound like it any more, cause the bleeding process was over, I guess.. now I'm not sure whether the new pump is faulty or not.. and if I can start the car or should I initiate the bleeding process once again??

[@RGMDG]

Great Video. I appreciate the thorough job done. I have the Bentley Manuals for my vehicle, so I am sure I could have done it, but this just makes it that much easier. Much appreciated. It is kind of Pathetic that BMW's parts seem to fail prematurely too much.. I Love to drive them but one not of caution: they don't claim to be the ultimate "reliable" machine, just the ultimate "driving" machine. I guess some reliability is inferred in that.. Your Actual mileage may very.. LOL

[@DaveBell1]

@BavarianAuto Thanks for the guide it helped immensely! I just finished, but my water pump WON'T power on. Can't get it to come on to bleed nor when the car powers on. I've got both the water pump and thermo harness in good. Any ideas? :(

[@DaveBell1]

I figured it out... 40amp fuse in the DME box was toast. :)

[@bavarianautosport]

Dave Bell - Thanks for the follow-up, Dave (sorry for replying late). This may help others.

[@miusrname1]

Dave Bell I've heard on the forums of people having to change the battery distribution block as well for the overheat issue, not sure how it's related. Where is the DME fuse?

[@DaveBell1]

mike kochis Passenger side corner of the engine bay... Near the firewall... You take off the tan cover and you have access to lots of large fuses. Also where you wire in JB4 if you are familiar with that.

[@bavarianautosport]

Dave Bell - Thanks Dave.

[@bmw9129]

MUY BUENO

[@jamalnasah1625]

thank you GOD BLESS YOU

[@kennethwang6568]

I have a 2007 328xi which is similar but more difficult to change the water pump and thermostat because there is a giant bar in the way. Steven L in the comment below mentions: "If you have the 335 xdrive model then there are a couple more things you need to remove in order to gain access to the water pump. You don't have any access from underneath as you see in this video since there is a huge steel bar that runs underneath it. You have to remove the intercooler and fan and then the stab bar and then work some magic from underneath and also from the pass side to get to all the places." I'm not sure if the 335 xdrive is similar to my 328xi but he also mentions a huge steel bar. Does anyone have a guide to get around this or to remove the bar if that's even possible? Thanks

[@DoozyBytes]

If you have the 335 xdrive model then there are a couple morr things you need tp remove in order to gain access to the water pump. You dont have any access from underneath as you see in this video since there is a huge steel bar that runs underneath it. You have to remove the intercooler and fan and then the stab bar and then work some magic from underneath and also from the pass side to get to all the places.

[@bavarianautosport]

Thanks for the input for the xi (x-Drive) models.

[@kennb33]

I followed Stefan's instructions got everything installed & working properly. The only thing is I completely removed the sway bar instead of swinging it down. Would this affect the alignment? I know the xdrive cars are very sensitive to that.

[@videomiser]

Just completed the job on 335ixDrive N54 motor. Bavarian Autosport's video was a great guide, but the chasis is indeed configured differently - the bay is a good bit more congested with the front driveshaft and turbo ducting. A tough job and significant risk involved in the case of any mistakes with hoses not fully secured, since many connections are concealed as items are reinstalled. I included replacing the hoses in my water pump replacement. Makes sense to me to replace them while I was in there. Had to rely on many of the gadgets and gizmos in my tool collection. I can't imagine doing this job with your basic ## piece socket set. I picked up a flex nut driver for the clamps like the one Otto features, but I didn't put to use due to lack of access.

[@peterpatrone1952]

Great video. Will buy from Bav Auto.

[@bavarianautosport]

Thank you, Peter. We're glad to be able to help.

[@Galileo9.81]

The larger quick disconnect hose wouldnt go into the thermostat. Very hard to push it. Ended up disconnected while warming and spilt lots of coolant. What should i do?

[@bavarianautosport]

Try lubricating the o-ring in the hose end and the male nipple with either petroleum jelly (Vaseline) or clear silicone grease. This helps these QD hose ends push together much easier.

[@ardeshirno]

Brilliant !

[@rock8pie]

thanks dude helped a lot!

[@steameblair]

Dam u made it look extra east 👍

[@mehrdadr59]

Thanks for this very informative video , at the very end you mentioned about bleeding procedure, once it is done how we can get the car out of that mode ? is it stops on its own ? I also saw couple other video for this issue they said if radiator fan is going high speed even with cool engine it could be temp. sensor too , in order to narrow down to faulty part can we test old water pump by putting it on bleeding procedure so I can hear sound of it whether is running or not ?

[@lilrondmx]

love this video thanks bad

[@126452a]

How do you know when the bleeding process is over?

[@neilhale8626]

Arturo Ruiz good question

[@Mango_Productions]

I'm stuck at trying to bolt on the top water pump e12 bolt. I was able to remove it easily but getting it back on to torque it tough.

[@CoolridesBiz]

Great guy!!

[@CristianoUniversal]

I just bought the water pump, bolts, thermostat and coolant from Bav Auto. They seem very good quality parts, thank you. Somehow my brother and I took both the pump & thermostat out but would like some help in managing those "quick disconnect" hose clamps, since we snapped the metal clips/fasteners (or whatcha may call them) by accident. They were the hardest for us, and I'd like to be sure that we put everything back together right. Any help would be much appreciated. Thanks in advance.

[@bavarianautosport]

Are you saying that the quick disconnect clamps on the hose ends have broken? If the clamps can no longer secure the hose end to the nipple .... you will need to replace the hose. We have not yet replaced any of the hoses that connect to the pump and thermostat.

[@CristianoUniversal]

The actual "squared C-shaped" fasteners are loose, off, but not broken. Can we re-adapt them to where they belong? If not, which possible hoses am I looking at to replace? (I honestly can't even remember a whole lot...) Are the fasteners critical? Do you have these hoses? Are they relatively easy to replace? Sorry about all these questions. I'm really in a bit of a frustrated rush, hoping to put everything back together by Sunday and have the car smog-checked Monday. Thanks in advance...

[@bavarianautosport]

Juan Salinas - If the clips just pulled off the hose ends, we would imagine that you should be able to re-affix them and they should work to secure the hoses. If the hoses do indeed need to be replaced, you'll have to tell us which ones (or all .. if that's the case). We can look them up on the micro-film. At this time, we do not stock any other than the "U" shaped one from the thermostat to the pump. We can order all of them. As for replacement .... not so easy. They route up and around the engine to the opposite connector ends.

[@CristianoUniversal]

Thanks so much. We'll check them out and will keep you guys in mind for more future buys.

[@CristianoUniversal]

The hoses' quick disconnect clips went back to place, luckily. Thank you, BavarianAuto​. My only concern now is that we tightened and then had to undo and re-tighten the three new water pump bolts I got from you. Will this cause problems?

[@vitaliryumshin6174]

great video! one question, is it possible to replace thermostat only without getting the water pump out? thanks

[@KozmikEl7]

Great diy...I have a quick question, I followed your steps pretty much and seem to have a drip of coolant running down the side of the pump...searching everywhere and can't seem to pin-point where it's coming from!?!? Get this it only drips when I start the vehicle🤔 I'm currently pulling everything back down to check. Maybe tightening my coolant hose connections will do it. Appreciate any advice...BMW 335i Cpe N54 E92. Thanks

[@LarryTristano]

I have a 2007 X3 3.0si AWD, there is a lot more chassis and hoses in the way. Do you have another video or instructions for AWD vehicles?

[@rickykinser9078]

Are the water pump manufacturers addressing the early failure problem and modifying components to give a better water pump life expectancy? 50-100,000 mile life expectancy is substandard. At the listed price, these water pumps should have a lifetime warranty. Many thousands of BMW owners are disappointed with the electric pumps, and it's unfortunate a recall hasn't been issued to address the inferior product design. Great video and thanks for showing us how to install the assemblies; keep up the good work.

[@2Phast4Rocket]

BMW are not known for its reliability. If you are going to own BMW and decide to keep it with high mileage, you better learn how to fix it yourself because repair cost often exceeds the car's value.

[@rickykinser9078]

2Phast4Rocket Many people I know would disagree with the car not being known for reliability. Parts are overpriced, and component life expectancy has decreased. And yeah, I can fix it. Their labor rates are some of the highest in the nation, when added to part markups of 100% or more. I probably won't buy a second one. There are many reports of water pump failure at 50,000 Which I don't consider high mileage.

[@2Phast4Rocket]

Ah water pump failing at 50K miles is very low mileage indeed. My Ford pickup's water pump started to fail after 80K miles. I owned Toyota Corolla that had the water pump replaced after 100K miles. If you are trying to argue reliability, you are doing wrong siding with BMW.

[@rickykinser9078]

No doubt , I've never seen a bad transmission in a BMW, but that's about it. My friend typically puts 200/300k miles on his with little work. Want reliability get a Toyota, handling a BMW.

[@2Phast4Rocket]

The older BMW auto were made by GM. The M3 SMG is a nightmare to work on when the system gave out fault codes. I am speaking from experience. When the BMW are working, the handling mesmerizes you and makes you forget all the thousands you sank into it.

[@bavarianautosport]

Yes, the pump cycles on/off.

[@andyrp27]

Hello did you drain the rad as well .thanks also how many litres of coolant go back in cheers

[@michaell.445]

That looks quite a bit easier than the X-drive I'm doing it on. There's no room for your hand with a palm facing a wheel like that no way.

[@OscarOchoa27]

Great video, I replace both my water pump and thermostat but a week later my service engine soon light came up staying on the thermostat. Any ideas? Also I check all the harness and everything looks good

[@OscarOchoa27]

Forgot to mention I haven't got any type of overheating sings on the car

[@williamrogers8109]

Shouldn't you leave the bleeder valve open during the bleed procedure so that any air in the system can be expelled and purged?

[@chrisbatten2369]

Great video! I have one question. I was told that when you bleed the coolant system that the water pump was suppose to constantly run for those 12mins. I thought my water pump was bad because it cycled on and off, but you said that the water pump should do this? Correct? Thanks a bunch..

[@louieg1420]

Hi steve . Is there an easy way to replace the cylinder thermostat hose without removing the pump and thermostat housing ? The plastic that connects to the block broke and it's the only thing that needs replacing. But there is no room from top or bottom of car to disconnect the hose from thermostat. 2008 535i Thank you