| Took the page forever to load for me for some reason, but here it is combined with an e46 HID retrofit writeup by 1SIKZ. Looks like he used Tamiya model gears: Tamiya part #50602, These are readily available online, I just picked up 2 sets for $11 shipped on ebay. JDM headlight housing adjustment gear replacement 

Cheers, JBrobst "A life spent making mistakes is not only more honorable, but more useful than a life spent doing nothing." George Bernard Shaw |