BMW E92 M3 DCT Transmission Fluid Service How To DIY

This video shows how to properly replace all of the fluid and filters inside a DCT Transmission. Below you will find lists containing all the Parts, Tools, Torque Specs used in this video as well as time-stamps for key job moments and links to some of our supplies. We HIGHLY RECOMMEND watching the entire video rather than skimming through as there is vital information discussed throughout the process. This video was specifically filmed on an E92 M3, but the process should be the same for most vehicles equipped with a DCT transmission.

This video is for entertainment purposes only. We are not responsible for any damage to your vehicle.

Welcome to BavhausTV!

Parts List:
(Some Parts Listed Below Are Optional)

- Upgraded Aluminum Transmission Oil Pan - Part # URO-015801
- Stock Plastic Transmission Oil pan - Part # 28108070791
- Transmission Drain Plug - Part # 28107842383
- Transmission Oil Pan Mounting Bolts - Part # 28107842386 (X14)
- Suction Jet Pump - Part # 28107842838
- Suction Jet Pump Mounting Screw - Part # 28107842839
- Suction Filter - Part # 28107842828
- Suction Filter Mounting Screws - Part # 28107842829 (x2)
- Pressure Filter Kit - Part # 28107842840
- Transmission Fill Plug - Part # 28107850241
- DCT Transmission Fluid - Part # 83222446673 (X7)
- Transmission Oil Cooler Line O-Rings - Part # 17222245358 (X2)

Tools Required:
- 8/10mm sockets
- 6/8/10mm Hex/Allen Sockets
- 22mm Wrench
- T30 Socket
- 3/8 Torque Wrench
- 90° Snap Ring Pliers
- 90° Needle Pliers
- Small Hammer
- Trim Tools
- Measuring Bucket (x2)
- Fluid Transfer Pump
- Rags
- Brake Parts Cleaner
- Flashlights
- Scan Tool
- Gloves
- Torque Check

Torque Specs:
- Transmission Lines To Transmission Thermostat - 19nm
- Suction Filter To Transmission - Front Screw 8nm - Rear Screw 5nm
- Suction Jet Pump To Transmission - 6nm
- Transmission Pan To Transmission - 10nm In Sequence
- Plastic Drain Plug - 8nm
- Fill Plug - 25nm

Amazon Affiliate Links:

- 1/4” Socket Set

Here’s a link to a pretty inexpensive yet comprehensive 1/4” socket set with a 4.6/5 star rating.
https://amzn.to/3OoOcXd

- Hex/Allen Socket Set

This is also a comprehensive set with a 4.7/5 star rating
https://amzn.to/3SoGCNx

- 22mm Wrench

This link is for a 22mm wrench, used to remove the 02 sensor.
https://amzn.to/49jmZgt

- Snap Ring Pliers

Here’s an inexpensive set of snap ring pliers. A couple 90° tools are included.
https://amzn.to/3w9lsv5

- Picks

This link is for an inexpensive pick/hook set.
https://amzn.to/42rlwlW

-Trim tools

This link is for an inexpensive trim tool set.
https://amzn.to/482nKd1

-Small Hammer

Here’s a link to an inexpensive small hammer.
https://amzn.to/3Oun09w

-Torx Socket Set

This link is for an inexpensive yet highly rated torx socket set.
https://amzn.to/3UrqRrO

-3/8” Torque Wrench

Here’s an awesome digital, angling torque wrench.
https://amzn.to/48AGSjC

-90° Pliers

This link is for 90° Needle Nose Pliers
https://amzn.to/3w7vjl4

- Fluid Transfer Pump

Here’s an inexpensive fluid transfer pump similar to the one we use.
https://amzn.to/3LKUwqC

Here’s a heavy duty one, way nicer than what we have.
https://amzn.to/3ZGhVz7

- Brake Parts Cleaner

This is the only brake parts cleaner we use in the shop. This link is for a single can.
https://amzn.to/48BKBNT

Same stuff, just how we buy it. In a case of 12 cans.
https://amzn.to/3ZIhDYv

- Torque Check

Used to mark verified torque after service and to indicate tampering. This is the same stuff we buy in the same orange color from this same vendor.
https://amzn.to/3LHvFEg

Red.
https://amzn.to/3RLfMQT

Blue.
https://amzn.to/3teCSoN

- Measuring/Mixing Bucket

I use these to measure how much fluid I remove from a transmission or differential to collect data on what’s going on in the unit, and how much fluid I should put back in. You can also use a clean one to fill mix fluid as we did in this video.
https://amzn.to/46gv0BJ

- Rags

We buy this exact bag of rags all the time. Super inexpensive for the amount you get. Highly recommended!
https://amzn.to/3w7mzeM

-Gloves

Here’s a link to some highly rated disposable nitrile gloves. https://amzn.to/3LIRVxf

Key Moments:
0:00 - Intro
1:09 - Parts Overview
6:51 - Job Overview/Fluid Draining
13:05 - Pressure Filter Replacement
21:05 - Suction Filter Replacement
27:27 - Transmission Pan Replacement
32:50 - Fluid Fill/Oil Balancing
42:10 - Job Notes
43:34 - Test Drive/Commentary
44:55 - Outro

Enjoy! -Bavhaus