new fuel sending units have gold contact fingers--see mercedes DTB47/00--part number located on top of fuel sender unit--old part number is 542 25 17---new part number is 542 41 17--full tank of fuel gauge read three quarter full--new sender reads full--easy to replace--requires a spanner wrench in holes 180 degrees apart on top of sender--push down and turn counter clockwise-make sure fuel level is down at least 3 gallons--160.00 at europartsamerica--this part number is for 2000 210 body--