What is this part 2010 Doblo 2.0L multijet

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What is this part 2010 Doblo 2.0L multijet

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Feb 11, 2013
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Spalding Lincs
My Doblo has developed a water leak but the part that is seeping water is baffling me.
On the LH side of the engine at the front just below the cylinder head is a plastic unit that seems to attach to the block. Its plastic housing is seeping water, strange thing is there is a vacuume pipe coming from it that connects to the turbo waste gate control. If it's a vac pump why would it have water in it? Unless they decided to cool the Vac pump?
Anyone please tell me what this is and is it unique to only this engine.

Thanks Ken
 
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