Hi lowblock. Again I really wish if I could tell you much about this camera. Again... To me it looks like its an OEM. Wether its for an E53 or other model I really wouldn't know and don't wanna lie to you and say yes. PM me your email address and I'll take a closer picture of the connector or of whatever picture you want me to take. As for it been tested... I haven't tested myself but I'm assuming the person who sold it to me tested it because he was a big seller on eBay selling bmw parts when I bought it back then. Let me know if you need anything from me so I can help you with this item ok. Thanks
P.S I've seen the same camera been on a E70 X5 that looked exactly the same so it could be taking off of an E70 I'm not quiet sure