The RP4.2-MB11 radio replacement interface is your plug-n-play solution to upgrade your factory radio with an aftermarket radio in Mercedes Sprinter or Metris vehicles. Steering wheel controls, 3.5mm AUX input, USB port, and the back-up camera function are all retained with the RP4.2-MB11. By adding on the PAC VS41, you have the ability to add front and blind-spot cameras creating a complete camera system. PAC quality and engineering provides you the most professional installation solution available!