Intercooler replacement
Here are some of the parts that you may want to think about when you do your ordering:


In regards to the gaskets, some of the above that may be of importance are depicted with the red arrows:
- 250: Part#: 1121411280 (Gasket to the intake fitting on the supercharger)
- 450: Part#: 1121411180 (Gasket to the intercooler)
- 600: Part#: 1121411380 (Gasket from the throttle body to the intake manifold)
- 630: Part#: 3059970345 (This is a seal ring for the throttle body - may or may not need)
Here is the general gist of how to remove and install the intercooler: note that the protocol (STAR Service library) doesn't appear to mention the sealant to use with the gasket between the IC and the intercooler. I'm not sure what that sealant is called.

Last edited by boohooramblers; Apr 22, 2009 at 11:52 PM. Reason: better resolution images
Here are some of the parts that you may want to think about when you do your ordering:


In regards to the gaskets, some of the above that may be of importance are depicted with the red arrows:
- 250: Part#: 1121411280 (Gasket to the intake fitting on the supercharger)
- 450: Part#: 1121411180 (Gasket to the intercooler)
- 600: Part#: 1121411380 (Gasket from the throttle body to the intake manifold)
- 630: Part#: 3059970345 (This is a seal ring for the throttle body - may or may not need)
Here is the general gist of how to remove and install the intercooler: note that the protocol (STAR Service library) doesn't appear to mention the sealant to use with the gasket between the IC and the intercooler. I'm not sure what that sealant is called.


bookmarked...thanks..
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You need to be extremely familiar with the car, you need certain tools, extra miscellaneous hardware and even help from a friend to tackle this job.
This is Medium-High level skill job.
The Best of Mercedes & AMG
But yeah it was tough, it took me a total of 3 days to figure out how to take certain parts off.
What bohoo posted is a very simplified version of the disassembly. For someone who doesn't know much about cars it's still do-able.
The dealer ordered it today, I can't wait for them to fix...
Here are some of the parts that you may want to think about when you do your ordering:


In regards to the gaskets, some of the above that may be of importance are depicted with the red arrows:
- 250: Part#: 1121411280 (Gasket to the intake fitting on the supercharger)
- 450: Part#: 1121411180 (Gasket to the intercooler)
- 600: Part#: 1121411380 (Gasket from the throttle body to the intake manifold)
- 630: Part#: 3059970345 (This is a seal ring for the throttle body - may or may not need)
Here is the general gist of how to remove and install the intercooler: note that the protocol (STAR Service library) doesn't appear to mention the sealant to use with the gasket between the IC and the intercooler. I'm not sure what that sealant is called.


They’re generally the first ones that succumb to a dealership. In this circumstance I would purchase the parts and book an appt with a reputable shop for install. Best of luck whichever route you choose!
Last edited by RPB; Jul 26, 2019 at 11:51 PM.
Now. Has anyone replaced their c32 intercooler start to finish? If so, I would like an idea of how long it's going to take.
Now. Has anyone replaced their c32 intercooler start to finish? If so, I would like an idea of how long it's going to take.



