How To Service A BMW E90 3 Series Transmission

In this video I show you how to service an automatic transmission in your E90 BMW. I'm working on my 2008 335i with an N54 motor.

This car has the 6HP21 transmission which also goes by 6HP19 or 6HP19TU. This is a 6 speed ZF transmission.

I show you how to change out the bridge seal and all the tube seals along with the solenoids which do go bad over time.

In my case I was getting a rough downshift to first gear. The likely culprit was the bridge seal.


Link to a thread showing how to setup INPA/NCS Expert:

https://www.e90post.com/forums/showth...

If you have Windows 10 64-Bit:

https://www.e90post.com/forums/showth...

You can find the INPA cable online at places such as Amazon or Ebay. Search INPA Cable K+D Can.

The pars and where I purchased them:

Solenoids

https://www.fcpeuro.com/products/auto...

Bridge Seal

https://www.fcpeuro.com/products/7-7-...

Tube Seal Long (Quantity 1)

https://www.fcpeuro.com/products/6-25...

Tube Seal Medium (Quantity 1)

https://www.fcpeuro.com/products/5-93...

Tube Seal Short (Quantity 2)

https://www.fcpeuro.com/products/4-51...

Transmission Pan

https://www.fcpeuro.com/products/bmw-...

Mechatronic Sleeve

https://www.fcpeuro.com/products/bmw-...

Foam Strip (Recommended but not shown in this video)

https://www.ebay.com/itm/ZF-New-Solen... When you see the word "affiliate" listed beside any link in my description please know that this is a custom link and I will earn a small commission if you opt to purchase using said link. This is at no extra cost to you so it's a win all around :) Thank you!