ABS MCU module
 

Hello all,
I hope some one can help me with this, I recently had an accident with my ML320/2002, and the damege reached the ABS unit on the Left front side, as far as we can see the MCU unit is dameged and the pump looks fine. I asked few used parts shops and they adviced to buy the whole assembly (MCU+pump) and not just the MCU unitto avoid any incompatibility with the pump. I would like someone advice and feedback if that's true, and if I can just replace the MCU unit without the pump. I appreciate you feedback.