Just took my 2010 Sprinter SMB in for what I thought was going to be an easy repair of the heater element. The tech says the heater is no longer made and replacement is not available. Does any one know what the current "100 volt fast recovery with bypass valve heater" is being installed? or recommendations that will fit within the same dimensions. Thanks
If your SMB has the Insinkerator W152 water heater the standard replacement element was ISE part# 42671, however those are discontinued and VERY difficult to find these days. Some users report successfully substituting the Camco 02102/02103 as a replacement.
The replacement elements noted above are all 1" NPT right hand thread. Apparently a few variants of the W152 shipped with special left hand threaded copper elements. Not much chance of finding an element replacement for those.
Not sure if this will help your situation or not but I saved this thread link for when I tackled adding hot water to my build. Scroll down a bit to where Boy Wonder mods a standard hot water heater by adding a 12v element. Then maybe go back and read the whole thread from the beginning.