6 required (Glow plugs could be either Bosch or Beru. Both are original equipment suppliers to Mercedes)
For 3.0 Liter V6 diesel 2007-Mid 2012
For model year 2012, these steel glow plugs were used up to June 15, 2012 thru engine number 41330713
This is a 4.4 volt steel plug and NOT a 7.0 volt ceramic plug
Sprinter II 2007-Mid 2012 3.0L V6 diesel Do not try to remove glow plugs from a cold engine.
Before attempting to remove any glow plugs, start the engine and allow it to reach operating temperature. Failure to do so could result in shearing a glow plug off in the aluminum cylinder head. Before installing any new glow plug, coat the new glow plug threads with a good quality anti-seize compound, to facilitate easier removal in the future.