BMW X5 Expansion Tank Replacement E70 With The N55 6 Cylinder Part Number 17137552546 

You are the best. You show all the details that someone may face where most other installers do not take the time to show small things like this. You are truly "The BEST" Thanx so much!!

If no one has ever told you that YOU ARE THE MAN. LET ME BE THE FIRST TO TELL YOU. YOU ARE THE MAN!!! THANKS SO MUCH!!!

This is the best step by step repair I have found anywhere. And I am a retired 50 yr mechanic

I have done a lot of work on my e70 X5, your video are by far the best, so many skip important steps and you also explain why you do each step. Fantastic man1

Just finished putting in my replacement tank with the electric water pump purge. This video made the daunting seem simple. everything now works as it should. Many thanks!

Great detail! One of the best DIY videos I’ve seen on RU-vid.

Thanks for the video. Got out of work today and found my coolant reservoir had marked the parking spot. I had tools and a quick trip to NAPA got it sorted in about an hour and a half.

Great step by step! I'll be replacing my coolant reservoir for my BMW x5 and this one hit all the key points, especially sharing the vacuum tools

Very nice video with thorough instruction. I couldn't be happier I found this video. Makes my job so much easier. Thank you.

Excellent step by step, very helpful tips. Thank you.

Great step by step. Im changing mine Tuesday! It just started leaking yesterday. Thanks again...

Ok this was a great Video, He got right to the pain point at the bottom of the tank , and very good advice on those metal clips, he is correct lose it... go back and order a hose and wish for a week you could find the thing that is now lost in the engine compartment. But the thing I would like to say is the pick he is using is good if you are an expert, But I was not,and fought to find that lower connection pull location. I found my right angle pick and it came right off. Great video, thanks for posting this !!

Really do appreciate this video I followed this step by step and it made everything so much easier to come across especially with the bottom Hose and the pick, thank you !

Very clear video. A couple of things. 1) I'm not 100% clear on that the hoses are to be pushed on with the clips in the closed position (rather than pushed on and then latched by pushing closed, maybe clearer once I see it, but a bit more explanation of the reattachment of the hose fittings would have helped me 2) the links on your page go to Chinese not OEM parts, which you mention in the video. I always take extra time when I buy to validate I'm getting OE parts, and I buy from the usual suspects (ECS, getBMWParts etc). Great video, easy to follow, thanks again!!!

Thank you so much mate! Very straight forward my x5 is up and running perfectly.

You are a Legend!!! Thanks for the Vid. It was super helpful. Just fixed it on my X6. All thanks to you.

great video - well explained and excellent camera work. thanks so much.

Wow!! Thank you so much for showing this video it’s really helpful and inspiring definitely 💯 you do my life more easily. You explained everything with detail and clearly thank you again!!!

Chinese O-rings in my BMW had squashed flat one year after the manufacturing date on this replacement expansion tank. This caused water leaks at one liter per day (one quart per day) occurring over night when the engine cooled. Replacing 5 O-rings fixed my leaks completely. Interestingly the leaks were not detected by pressure testing by 3 different mechanics. It appears that the O-rings seal under pressure but open up as the pressure drops.

Excellent video! Just took my time a follow you the whole process and wasn't difficult, only but that bottom clip!!! Geez that's was a momo.. Thanks

Great video and information! Very detailed.

Very clear demo..thank u sir!

excellent video. much appreciated. you saved me some $$ on the repair. Thanks!

Thanks for posting. Was able to complete the job with your help

you are show all details even small thing thank so much,

Very well explained! Full details. Thank you! The only thing, is I don´t have that fancy tool. Pretty handy! Appreciate the time you used to show us how to do it right! Bye!

I also noticed the new BMW OEM tank has the level indicator 20mm lower in the tank than the original tank (80mm down from rim vs 60mm). Any ideas on this? A running change? The level indicator isn't loose - it is rigidly mounted like the first one. Thanks again, your video made the job really straightforward.

Another great video. Excellent work .

I just realized many of those hose clips can be released by pushing down on the clip as well as pulling up. So if you push down you don’t have to worry about them flying off. Just something to try

The tips are very helpful.

Great video!

Great video. The brake pick tool or something just like it is critical for getting than damn clip out. Oh, and go easy removing the sensor clip too. I snapped the retainer clip and then had to super-glue...I know...a terrible option but at 113k miles I hope I won't need to do this again...

Great video. Thanks.

nice video, thanks

Awesome vid, very helpful. Thank you. I did replace my x5 tank but I think I need to replace the bottom hose that’s connected to it. When I went to connect the hose back it seemed like the end of the hose where the metal band is felt puckered up. Of course I needed the ride so I put it on and filled it up, not 30min later I get the “coolant low” warning urg!!! Is that hose difficult to replace, I figure I’ll probably have to access from the bottom. Any thoughts? Thanks again and keep up the great work.

First of all I have to say, great video very detailed and helpful from start to finish. I replaced the tank as well as sensor and cap, no problem. Thanks! However, when I bled the air out of the system engaging the electronic water pump, the coolant was not flowing as strong as in your video. No kink hoses or anything. Any thoughts? Btw. My tank gave up in the exact same position as yours identical crack. Thanks and take care. Alex

Good job. VEry profesional

Thank you very much 👍👍👍

Thanks brother,

Thank you!

Should the system have no fluid in it to vacuum fill or can it be done on a system that has coolant in it to be sure there is no air in the system

My X5 has a very slow leak in the expansion tank. I have to add a small amount of coolant about every other week. When I replace the tank and refill it, do I really need to pressurize the system or can I just let the electronic water pump purge the system?

Hi I have a e70 not maintaining temperature keeping the car warm can expansion tank affect a thermostat if it's leaking pressure

Great video! I'll be doing this in my X5. One question, I want to do the bleed but I have a Noco Genius5 battery charger, can I do the bleed procedure while keeping the Noco car charger connected so the battery doesn't drain? I don't have a professional battery charger as you, wondering if that would be okay. Thank you

Nice video! Is there any reason some of the N55's spin bearings and grenade? Poor maintenance? I have an 11 335i Xdrive Msport. I've been changing the oil every 3k miles since I got it at 70k miles, and I've done the ofhg gaskets. Anything else I need to know, Thanks!

Very helpful!! Subscribed. Canuck?

My indicator is floating out, is it possible to fix or do i need to replace the whole tank??

question from a wannabe DIY: 1) engine is cold and i have the recovery tank cap off 2) when i start the car i still see the pee-like stream shooting off from the side as if it was purging. is it actually purging? (without going thru the engine-off electronic purge). under normal operating conditions, is the coolant system always purging air anyway?

First off thank you for the video because you explained how to get that lower coolant hose off the bottom of the expansion tank My job was less of a headache. Now my issue is. They have changed the upper radiator hose. Now you have to buy 3 different parts to change the Upper hose on x5 2008 3.0Si. So i will list the part numbers BMW gave me and side i need all this to change the upper radiator hose. Main Hose #171275-93490 CAP Off #171275-987004 and "Vent" something #171275-36235. I like to think i have good common sense and a good Mechanical Aptitude, However BMW makes it so complicated to do some very simple repair. Here is where i need your experience: what is the configuration to the other two hoses 1. Cap off 2. Vent something or other. Really would like a answer ASAP as i have the vehicle tore down Thanks to your Very informative and to the Point Video. It was a Snap to get to this stage. Help, Advise, comment, appreciate feedback

My expansion tank leaks where the bottom hose connector is. Does the unit or the hoses comes with gaskets?

Where can I get the hose clamps from?

Need a video for the actual tank

Do you have to be on level ground to bleed?

just replaced the tank and attempted the purge method ( turn on, gas pedal 10secs). I hear it attempting to activate but i dont see anything happen underneath the cap in the tank. Thoughts?

7:31 😊

The electronic bleed is supposed to be done with the expansion tank cap off?

Awesome video

$ for the tank?

I didnt know Jon Hamm fixed cars.