Project E39 | Ep.9 | FULL Cooling System Replacement 

This channel is so underrated.

Exactly. Nothing like getting a RU-vid notification from the only channel I’ve enabled it on. Thankful to this channel for his automotive curiosity and diagnosing skills. Keep it going PM 👍

Fantastic work. Gives me motivation to tackle some of this on my M5. Maybe a commenter already said, but you should make clear that the BMW coolant needs to be mixed 50/50 with water, it doesn't go in full strength.

Quick tip: the oem bmw thermostat is just a rebrand from mahle/behr

DUDE, just wanted to say THANK YOU big time for such amazing and detailed videos, keep em up man youre amazing!

Happy thanksgiving to my fav channel!

excellent and clean work there..i am gonna DIY and replace all these parts on my next oil change on my 530i

The engine is pretty clean inside.

Great videos, I have enjoyed watching them, as I am about to embark on my own 2003 530i E39 Sport restore. Thanks for the videos...

happy thanksgiving! it seems like the cooling system is the most neglected system in most cars

@practical enthusiast If/when you finish this refresh and enjoy all the miles with smiles, I'd love to see you put this beautiful unicorn up for auction on BaT. You'd stand to make the most and the comments sections would be enjoyable to follow! Best of luck, thanks for the vids! Hope you're next project is an E28!

Nothing has beat my water pump from rock auto the entire thing is metal

Instant subscribe for using proper coolant

Did the same on my 2003 530i. Next is upgrading the DISA valve

E39 Best Car. Happy Thanksgiving

Hey sir, congrats on all your well done videos. Unfortunately you missed 2 main components that should be replaced as well, which are the cooling pipes right under the intake manifold since you were already there. Then it would be a complete job. but great job overall. thanks for ur videos. C ya around.

Thanks!

The stills at the end are a nice touch... Happy Thanksgiving!

Not sure if you replaced the plastic fan but that is the one thing that should absolutely be done. They become brittle, break and can shred your belt and dent the hood.

Why do I have to buy access to the parts list

Found a crack in my radiatoer right by the connection for the upper hose. My E39 is a 2002 with 60,000 miles on it. It seems the SE Texas heat has taken its toll on this car. Everything I touch that is plastic seems to crumble and fall apart. I go to fix one thing and that leads to another and so on.

You are my new best friend dude ❤️

Happy thanksgiving!!!

Great video very precise 👍

What about the pipes underneath the intake?

heard a lot of mixed reviews on rein coolant hoses. any updates on the ones installed ?

How hard should I tighten the water pump and thermostat?

great videos

Will all these parts on the list fit a 03 e39 525i?

Which model milwaukee ratchet do you have? Do you find it has enough tourque for most small/mid size fasteners?

First of all - GREAT videos man! I’m curios to understand why you did not remove the air intake manifold and change the coolant pipes below? Are they less likely to crack or? Greetings from Denmark - Scandinavia

Hello from Spain, nice video. I have 525i e39 m54 and i have changed the thermostat and radiator. The temperature in the hidden menu up to 99° and i want to ask you if its normal for this engine, because thernostato is completly open to 97°. Best regards!

Is FCP Euro slipping when it comes to parts kits these days? Seems like there more expensive and less convinient. Idk maybe the market these days too but im not sure.

Hallo,im from indonesia 🇮🇩. Where expansion valve Ac e39 location??

do i have to pay for you to show me the parts numbers?

can you share the torque specs for each bolt here?

Gotta say with all of the work done so far, I’d estimate it would have been a $3.5-4K shop bill at an independent shop. Any idea what the estimate would be for the work you’ve done?