BMW E46 (3 Series) MS42 NEW / RMFD ECU DME


All Our Products Come with a 1 Year Warranty Period, You may Add a 2 or a 3 Year Extended Warranty in the option menu.

This is a Brand New MS42 DME (ECU) For a BMW E46 (3 Series) with a M52TU Engine. This ECU is Not Coded and has No information inside of it. This is Exactly how you buy Brand New ECU's from the Dealer. You would Pay over 1800$ after Coding and Programming at your local BMW Dealer. If you get a cheaper quote then its because they have not Added Coding, Programming, Alignment and Labor.


Since these ECU's are UN-CODED nor PROGRAMMED, We can program this ECU with the correct VIN Number of your Car and your The latest Software and Up-Date if you ask us to do so in the OPTION MENU above, however you will still need to make an Alignment with your EWS and DME (A 30 second job with the right tool). We can also leave it alone or you can make your Original Keys work also by choosing which ever option above. (See Below for more details).


Part numbers & Models Supported :


BMW Part Number ( Last 7) :

1429810 - 1429811 - 1430268 - 1430338 - 1430273 - 1438787 - 1430671 - 1430672 - 1430785 - 1430786 - 1430844 - 1430845 - 4509413 - 7500255 - 7500256 - 7505859 - 7506345 - 7526753 - 7526754  

(Always go by the last 7 numbers) ( MS42 is the Most important Abbreviation )


Siemens Part Number (MS42) :

5WK9001 - 5WK90329 - 5WK9037 


Models Supported :

BMW 3 Series E46 323i From 03/1998 To 10/2000 DME MS42 Siemens

BMW 3 Series E46 323Ci From 03/1998 To 10/2000 DME MS42 Siemens

BMW 3 Series E46 328i From 03/1998 To 10/2000 DME MS42 Siemens

BMW 3 Series E46 328Ci From 03/1998 To 10/2000 DME MS42 Siemens

(Automatic and Manual Transmission are supported)  


  • Shipping Information
  • DME & EWS/CAS Location
  • Reviews

For parts that are being delivered without any extra parts to be sent to RPM MOTORSPORT LTD:

  • U.S & Canada Overnight Shipping Guaranteed to arrive the Next day by 10:30 a.m ($60.00).
  • Europe & Australia 2 Days Shipping ($75.00).
  • International Shipping 2-3 Days Shipping ($90.00 to $130.00).

For parts that are being sent to RPM MOTORSPORT LTD. for extra programming or coding steps (DME ,EWS or CAS units):

If an Order is placed today, your package should arrive at our facility by tomorrow morning at 10:00 A.M if sent before the Cut-off time (4:00 P.M Local Time) at any UPS Store. Once shipped overnight, orders will take 1 to 2 business days in RPM MOTORSPORT LTD. for completion.

Your UPS Return Label will be emailed to you within 15 to 30 Minutes from order confirmation email as long as it is between 9:00 A.M to 5:00 P.M (Pacific standard time) Monday to Friday.

Customer Reviews

Based on 1 review Write a review

Customer Reviews

Based on 1 review Write a review

Customer Reviews

Based on 1 review
You guys saved us

We had a 1999 E46 with a bad ECU. We chose a different well known ECU remanufacturer and bought a reman. It would not pair with the car. Came to find out that there are specific issues in pairing the ECU with the anti-theft system on this vehicle. The other reman company shipped parts back and forth 7 or 8 times, each time with us spending untold hours making sure the issue was not in the vehicle, and paying to have the systems synched. We finally found RPM Motorsports, sent the anti-theft module and keys, they quickly sent them back with a reman unit that was plug and play and the vehicle started right up. RPM is clearly the expert on these vehicles. Thank you RPM Motorsports!!