Turbo o ring part number / where to buy

[Nickolm]

Hiya All,

I have a 2010 C4 grand picasso with loads of oily diesely type stuff coming from near turbo. Looks like there is play where it connects. Can someone guide me as to where to get this mysterious o ring that I'm guessing has failed so I can attempt a fix. Not to mechanically minded but looks straight forward enough. Have attached photo of bit I'm talking about screenshot from a video on how to replace.
Many thanks Matthew

[GiveMeABreak]

We can help if you need an original genuine part number, part diagram or factory build sheet and can't already find the info you need on the Forum. For this service, we do ask for a membership upgrade for official parts data as we are in turn charged for this. It will cover you for future part number requests for up to 2 years, so excellent value.

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Otherwise you can ask your dealer for the intake O ring seal.

[kk13171759588]

O-rings are generally not generic parts that can be bought anywhere. Seals in diesel high-pressure systems are typically made of special oil- and high-pressure-resistant materials (such as FKM/fluororubber), and their size is also crucial. It is recommended to prioritize purchasing original equipment manufacturer (OEM) or brand-name parts (such as Bosch, Elring, Victor Reinz, etc.) based on your vehicle model/engine type.
Based on the photo, the leak could be at:
Turbocharger inlet/return line connectors
High-pressure fuel pump to rail/rail to injector high-pressure fuel line connectors (copper gaskets/seals)
The crankcase ventilation (PCV) pipe may also have an oily smell, but it's generally not a "diesel smell."