Made a mistake removing oil Pan without removing oil level sensor and the extended end came off of the sensor. Is there electrical connections to that end? Can I reinstall it or do I have to purchase a whole new level sensor unit?
I noticed the part number has a lot of different letters at the end of the number sequence. Do these represent a different model or an updated series? My part number is 030 907 660 Q Does the "Q" represent a different model or an updated series? Can I replace it with any other same numbered part without the letter Q at the end of it?

Thank you in advance!