I have a Z4 with a production date of 11/2002. I tried to have a factory alarm installed but the BMW dearship couldn't do it because the alarm now produced are for 4/2003 and on. Does anybody know where I can find a factory alarm for my production year?

yes if you look in the bmw parts catalog they show a specific alarm for z4's before the 4/03 build date i beleive. If you contact the sales rep's at www.roadstersolutions.com (http://www.roadstersolutions.com) they should be able to order it for you. However an alrm is available.