[2] The engine features common rail Direct injection and a variable nozzle turbocharger.

In some heavy vehicle applications, Mercedes' BlueTec AdBlue urea injection is utilised for NOx reduction.

[3] In lighter vehicle applications, a NOx storage catalyst captures nitrous oxides, which are periodically purged (decomposed) by running the engine slightly rich.

A particulate filter lowers soot, making this engine ULEV certified.

On Sprinter models, a single air filter housing is mounted upon brackets on top of the engine.