I am hunting the donut ring on underside of iair intake assembly MB part number 1120940180...the part number came from a thread I posted a few months ago. I have checked a few online parts suppliers with no success. Is there a "go To" supplier for crossfire parts? Thanks as always for your replies, WillyA

 

Try sending a PM to MrMoPar

 

GASKET. SEAL. Mercedes # 1120940180

Mercedes Benz GASKET - 1120940180

There's two for you. Take the part number and type it into google... You will come up with more than enough places to start.

 

When I'm looking for a part like this I just put the number in the search box and Google it. For this number I had a bunch of hits.
$4 to $5 a piece. Easy peasy.

I have two spares but at that price they ain't worth the cost of shipping and who knows I might need them myself one day.

One of the best sites to see the actual part and get the MB part number if you know what you are looking for and can take an educated guess that the part is the same as the Crossfire part.
Go to Mercedes, SLK320 or SLK32AMG. If you know the part number type it in 'search' in the Mercedes section.
Click here.

Your part (no picture)