BMW Cooling System Overhaul Made Easy - 3-Series & 5-Series 1999-2006

Refresh your BMW’s cooling system yourself and save a ton of money!
NOTE:
*Z4 owners*
Your car has an extra brace that gets in the way of much of this work. Everything can still be done with the instructions from this video except replacing the water pump. To replace the water pump, you'll need to remove the bolt from the top of the motor mount on the (American) driver's side. Use your floor jack with a wood block to carefully raise the engine. With only one motor mount connected, the engine should tilt to one side, allowing just enough room to remove and replace the water pump.
Please recycle your used automotive fluids!
LINKS:
Mechanical Fan Removal: • Clutch Fan Removal | E...
BMW Coolant: amzn.to/43PhpQu
Breaker Bar: amzn.to/348rIWD
Torque wrench with 3/8” drive: amzn.to/3ooqxJl
Torque wrench with 1/4” drive:
Socket wrench set: amzn.to/3EP9kBW
Electric Screwdriver: amzn.to/3Hoafrt
Phillips screwdriver: amzn.to/34wLzhH
Large flat head screwdriver: amzn.to/3unqAsT
Flat head screwdriver: amzn.to/3J3azft
Tiny flat head screwdriver: amzn.to/3sbUm0L
T-50 torx socket: amzn.to/3sgPK9A
T-25 torx bit: amzn.to/34v0Dg7
Pliers: amzn.to/3gkXUIB
Plastic prying tool: amzn.to/3rx7q1X
Padded gloves: amzn.to/3Hpldgd
Magnetic bowl: amzn.to/3HsWtnA
WD-40: amzn.to/3oo5Opb
Silicone grease: amzn.to/3J1iryo
Low profile ramps: amzn.to/41Lgi2u
Floor jack: amzn.to/3gjrL47
Jack stands: amzn.to/3Pz5NN3
And a fluid drain pan: amzn.to/3uo6Xks
Amazon Prime Student Discount: amzn.to/3YzZNXk
Amazon Prime Discount for people with SNAP, Medicaid, etc.: amzn.to/3sfQpvW
Want to help the channel grow?
Support me on SubscribeStar: www.subscribes...
Support me on Patreon: / endlessmoneypits
Check out my merch!: endless-money-...
Or make a one-time donation: paypal.me/Endl...
TOOLS USED:
• Breaker bar
• Torque wrench with 3/8” drive
• Torque wrench with 1/4” drive
• Socket wrench with 3/8” drive
• Electric screwdriver
• Phillips screwdriver
• Large flat head screwdriver
• Medium flat head screwdriver
• Tiny flat head screwdriver
• Socket extension with 3/8” drive
• Socket extension with 1/4” drive
• 10 mm socket (air box, T-stat x3, WP/pulley)
• 13 mm socket (T-Stat x1)
• T-50 torx socket (Both belts)
• T-25 torx bit
• Pliers
• Plastic prying tool
• Padded gloves
• Magnetic bowl
• Plastic bowl
• WD-40
• Silicone grease
• Floor jack
• Jack stands
• And a fluid drain pan
SUPPLIES AND PART NUMBERS:
• 1 gallon of distilled water
• 1 gallon of BMW coolant PN# 82141467704
• Upper radiator hose PN# 17127510952
• Lower radiator hose PN# 11531436408
• Expansion tank PN# 17117573781
• Expansion tank cap PN# 17117639022
• Water pump PN# 11517509985
• Thermostat PN# 11537509227
• Thermostat bolts (1x) PN# 11531740316 and (3x) PN# 11531740317
• Accessory serpentine belt PN# 11287636379
• A/C serpentine belt PN# 11281437450
• Auxiliary fan switch PN# 13621433077
• Coolant level sensor PN# 17137553919
**This video description contains affiliate links, which means that if you click on one of the product links and make a purchase, I'll receive a small commission at no additional cost to you. This helps support the channel and allows me to continue making videos like this.
*Disclaimer*
Due to the litigious world we live in, I have to include this statement:
I cannot guarantee against improper use or unauthorized modifications of this information. The creator of this content assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. I recommend safe practices when working on vehicles and or with tools seen or implied in this video. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not the creator of this content.

[@EndlessMoneyPits]

***Z4 owners*** Your car has an extra brace that gets in the way of much of this work. Everything can still be done with the instructions from this video except replacing the water pump. To replace the water pump, you'll need to remove the bolt from the top of the motor mount on the (American) driver's side. Use your floor jack with a wood block to carefully raise the engine. With only one motor mount connected, the engine should tilt to one side, allowing just enough room to remove and replace the water pump.

[@mellowwhitenoise596]

This is the most thorough video I’ve seen on an e46 cooling system refresh. I appreciate how you show what tools you use in the beginning. It could be frustrating when you’re half way through a project and you realize you need to stop what your doing to make a trip to autozone because you didn’t have a tool that is necessary.

[@EndlessMoneyPits]

Thank you for saying that. My goal is to make these videos as helpful as possible, so please let me know if there is anything I could improve.

[@Nathan.Priddy]

Just like everyone else.....this is THE BEST e46 cooling video on KZbin. Other ones are decent but they don't show the necessary angles that you show, which is surprising because those video are done by the e46 pros but you easily take the cake. Subscribing rn! Much appreciation! Youre saving me hours with this video

[@EndlessMoneyPits]

Thank you so much! That's why I do it. The good videos out there just aren't good enough. I really appreciate the support!

[@charliekuhn1544]

This is more a cooling system refresh than a cooling system overhaul. If you're overhauling the entire cooling system then you should also be replacing all cooling system hoses and cooling system hard pipes (made out of hard plastic) which are all under the intake manifold. That way you ensure there will be no failures throughout the entire cooling system. Good video showing the typical cooling system refresh/maintenance.

[@EndlessMoneyPits]

That's probably true but most people seem to use those words interchangeably. This car is 22 years old, I've owned it for 15 years, and the coolant hard lines have never needed to be replaced so they are not part of my maintenance schedule. If they ever go bad I will make a separate video on replacing them. I always thought they were metal, are you sure they are plastic? Thanks for the input, I believe you are technically correct.

[@charliekuhn1544]

​@@EndlessMoneyPits no worries. I enjoyed your video, it was very informative. I'm positive the two hard lines along the engine (upper and lower) are made out of plastic, the same material you have on either end of the OEM radiator. That type of hard plastic. I have them on hand and am about to replace those two hard lines as well as all the hoses in the cooling system of my ZHP. Keep up the great work on your videos! 👍

[@Mark-ki3he]

@@EndlessMoneyPits I'm actually quite reluctant to change these also. The only times I've seen these fail is when the owner has changed them out for an inferior newer part. Sadly you have to be a lot more wary now with parts. OE brands that were good 20 years ago are getting parts made in China on the cheap. Even the genuine parts aren't necessarily good now.

[@EndlessMoneyPits]

This is so true. I just pulled out a Bosch spark plug and it was missing two of the four prongs for the electrode. Fml...

[@Mark-ki3he]

@@EndlessMoneyPits I've had no luck with Bosch either. Even the damn cabin filters they make don't fit now lol. I honestly hate buying plugs for anything now as there's so many knock offs online. I've seen really cheap "genuine" BMW ones on Ebay and there's just no way in hell those can be genuine at that price.

[@dbsilas2554]

7:47 was my last straw with this work, had to bring a higher power into it and finally by some means it was just done

[@EndlessMoneyPits]

The car gods are difficult to please.

[@SnarkyMikey]

I always burn sage when wrenching 😂

[@artiklo]

Fantastic videography skills and a really detailed DIY! I'm surprised you aren't at more views, I can see you rivalling big diyers in not too long.

[@EndlessMoneyPits]

You are too kind, but I hope you're right! I'm having fun with this and I'll be spending a lot more time making videos starting in June, so we'll see what happens.

[@tigim101]

I wish you had a video on everything e46 this is a masterpiece, doing my cooling system tomorrow!

[@EndlessMoneyPits]

I'm putting out videos as fast as I can but each one takes a lot of time. Glad you liked it! Good luck tomorrow, and let me know if you have any questions. I've done this job 3 or 4 times now.

[@anjingkampung]

This video is immaculate. Nice one.

[@EndlessMoneyPits]

Thank you! Took me about a month to edit this video. So much footage...

[@tehedx]

Such a nice, clear and clean guide, thank you!!

[@melvinlucas6147]

this the best video i’ve seen lol i’m doing this monday

[@EndlessMoneyPits]

Thank you! I appreciate you saying that. Good luck Monday!

[@melvinlucas6147]

@@EndlessMoneyPits thanks!

[@melvinlucas6147]

@@EndlessMoneyPits i took all my parts off today and man was your video much appreciated lol you don’t even understand how much it helped. my package from fcpeuro will be here monday morning. please keep making videos!

[@EndlessMoneyPits]

@@melvinlucas6147 Good to hear! Thanks for all the encouragement. I will be focusing on this channel full time starting in mid June, so we'll see if it goes anywhere. I love making these videos and being able to help people. Honestly, I watch my own videos when doing these jobs again. Saves a lot of time and helps me remember little things I might have forgotten. Thanks again for your support!

[@melvinlucas6147]

@@EndlessMoneyPits no problem at all! your video saved me time i needed today especially showing us where your mistakes were

[@topk1790]

The o rings already installed new parts ??

[@EndlessMoneyPits]

Yes

[@cooly350]

Thank you

[@markhenderson8832]

I have a question. I have a 2000 BMW 323i sport wagon. I’m doing this exact job on my car and following your instructions to every little detail. I can’t get the fan to come out. It’s loose, but there’s a bolt that’s attached to the water pump I believe? How does that come out, and did I miss you taking yours out?

[@EndlessMoneyPits]

Sounds like you have a mechanical fan instead of an electric one? I put a link in the description to instructions on removing a mechanical fan.

[@markhenderson8832]

Thank you…. I need to find those specialty tools to get that out of there. Apparently this KZbin doesn’t let you send pics in comments.

[@EndlessMoneyPits]

I rented them once from AutoZone. Many parts stores offer rental tools for cheap or free.

[@markhenderson8832]

@ the bolts on my pulley are broken. As is the pulley itself. I’m replacing all of those parts and I have them finally. I still haven’t been able to get the fan separated from the pulley/water pump.

[@EndlessMoneyPits]

What a nightmare! I'm glad you're getting through it.

[@alexissolis8576]

How did you get to put the expansion tank retainer on the reservoir I’ve been having so much trouble with that and it always come off because my e46 you have to push it in and it’s a pain

[@EndlessMoneyPits]

Mine might go off and on more easily because it's so old. I just had to pull straight up / push straight down. Silicone grease and a little wiggling might help. I think it was a little tricky on my friend's Z4 but I don't remember exactly how it was different. Wish I could help more than that.

[@alexanderstevens145]

Great job thanks mate

[@cathybrown-fi7oh]

😊❤