afeudale

Tried searching, but couldn't find this answered anywhere...

How do I know if my rear diffuser comes off and I can install a replacement one? OR if I need to install an overlay diffuser instead?

I have a 2009 C300 6 Speed Manual. The diffuser is straight across at the top, it doesn't have that "bump" in the middle like I see on some other models.

Thanks!

Doa

i assume you don't know what pack your car has so how about posting a picture?
only the AMG/sports pack has a real diffuser btw

afeudale

Thanks for the reply Doa!

I have these packages:

Sport Package for the C 300 (RWD only)…
• Dynamic Handling Package
• AMG 17" 6-Twin-Spoke Wheels
• New Direct Steering

Dynamic Handling Package
At the push of a button, vehicle characteristics can vary between a comfortable and sporty set-up. The following parameters can be influenced:
• Continuously variable damping
• Speed-sensitive power steering with variable centering and more direct steering ratio
• ESP/ASR (traction control)
• Accelerator response

So does that mean I likely have a real diffuser?

ickdeep

I would suppose so, do you have a photo of the back of your car?

TheRulesLawyer

Well you don't have a diffuser really, but you should be able to install the pre-face lift c63 diffuser. Sport package normally means you have the AMG bumper.

afeudale

Here are some pics. Looks like it has some bolts - so is it replaceable with a real diffuser? If anyone can link to a suitable diffuser - either CF or black, quad or dual exhaust, would be great :-)

Doa

yes that is the stock diffuser from the sports pack

TheRulesLawyer

IIRC you'll need the brackets as well as the amg diffuser for the earlier models. or at least the brackets are different.

mais821

Currently, your diffuser is held in by clips securing it to the bumper and those bolts pictured.

If you don't want to spend the extra on C63 brackets, you can also attach the pre-facelift C63 diffuser to your sports bumper via the clips and long machine screws and wingnuts. It's probably more stable with the brackets, but that worked for me.