I just bought them from the ******** in az. Not sure who makes them. These are a bit different from the diesel ones and cannot be rebuilt as far as I can tell. They probably do last a long time, but nozzles do wear. I think it just depends on how far you want to go to get optimal performance and efficiency. The fact that I had one completely plug on me was my motivation. I did notice a much nicer spray pattern with the new ones. Once I get a few more MPG readings, I will be able to report back.

__________________
Treiberg's Collection: 1981 240D, 1985 300SD, 1992 300E, 1997 E300D, 2005 C230K