BMW Serpentine & A/C belts : Diagram /// 330i (E46)

Diagram / illustration of the Belt arrangement for BMW 330i (E46) engine accessories (automatic transmission)

Link to Hi-Res image:
http://bit.ly/cJb6MU


Please Note - Do this at your own risk. Follow all Safety Procedures. Wear Eye Protection! Wear mechanics gloves if possible. Not responsible if you break anything (Yourself or Property) End Legal Mumbo Jumbo Disclaimer.

This DIY was performed on a 02 BMW E46 330i automatic, alpine white paint, with Sport Suspension Package, you know the drill. So if that is not your vehicle, there might be differences.

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[qwerbait5000]

So my serpentine and ac belt came off so did my fan blade break voiding much damage to radiator hood and fan shroud what do u guys think happened this is the second time

[bimmersgarage]

@qwerbait5000

What model year and what's the mileage? Without any videos of your ride (or seeing your vehicle in person), it's a bit difficult to diagnose. However, if this is the second time this has happened, then I would question you on the waterpump (it's bearings in particular) if the waterpump fails, it would allow the fan blade to wobble thus causing it to Shred things in the engine bay.

[harrykhehra]

hi i hace a 2001 bmw 330ci, i was wondering in your drawing are there two belts or 1?

[bimmersgarage]

@harrykhehra

There are two belts - the main Serpentine belt and a separate smaller A/C belt.

[55slice]

Great info. Just did this to my dayghters BMW. Although an E36 this was very helpful. Thanks for posting!

[bimmersgarage]

@55slice

You're most welcome! Glad it helped your daughter's Bimmer.

And, hopefully you did double check those pulleys when the belt was off. It's critical that you make sure those bearings in those pulleys are solid before new belts are installed. Just a heads up.

[pointklikkill]

this is a great diagram. is there anyway you can list the part numbers im getting a little confused between the 4 different pulleys. this is for my 2003 e46 330i

[mrfk86]

great info worked for my 325i thanks again

[bimmersgarage]

@rickzu

Certainly.

I know it's not Picasso...

but, I figured I put my mad drawing skills to some use.

Glad it helps.