I have an 04 M3 and want to do the same. You will see 2 types of Nav screens to install, the 4:3 AND THE 16:9 WIDESCEEEN. The widescreen is what comes in new M3's and looks Identical to the 2002 5 series ones. From what BMW has told me, they are not the same. That's the screen and housing. To order just those parts from BMW, you would have to dig deep into your pocket. Then there's the Computer (MK III or MK IV), GPS antenna, Onboard Monitor Radio, Harness, etc. I have bought a CD changer and MK III on Ebay for less than $200 a piece, so that's an option. The following sites show some retro-fits of the 4:3 with MK-III. I haven't found anywhere to purchase the E46 16:9 widescreen expect the dealership. Right now I'm trying to figure out what the differences are between the 5 and 3 series 16:9 screens and whether or not you can make it work in the 3 series. Good luck. Hope these sites help.

http://www.openbmw.org/nav/sys/


http://e46.mit.edu/BMW_OEM_Widescreen_NAV_Retrofit.htm

http://www.stakesuk.pwp.blueyonder.co.uk/retro.htm

• Anyone have info on a 330i Navigation Retrofit - distorted29 2004-08-13 21:45:49 (1791 views)
  • Re: Anyone have info on a 330i Navigation Retrofit (url) - technic 2004-10-13 15:27:40 (2059 views)
    • OEM Navigation Retrofit for a 2004 M3 with ASSIST (url) - technic 2004-10-16 08:43:51 (1583 views)
    • Do you have a part number for the kit? (nt) - davidc 2004-10-14 10:59:51 (1066 views)
      • ... it is in one of the posts in the link attached. (nt) - technic 2004-10-15 00:47:45 (995 views)
  • Re: Anyone have info on a 330i Navigation Retrofit - rlindblade 2004-10-11 07:29:37 (1190 views)
  • Re: Anyone have info on a 330i Navigation Retrofit - jermlai 2004-08-16 19:33:16 (2752 views)