Purpose of foam in air filter box? - Mercedes-Benz Forum

 
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post #1 of 2 (permalink) Old 05-16-2012, 04:13 PM Thread Starter
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Purpose of foam in air filter box?

I'm putting my W202 back together after a lengthy project. I disassembled and cleaned the air filter box of motor oil and grime (bad pcv system) and found some degraded foam surrounding the elbow between the bypass and air intake. It was soaked in oil and came off in pieces. Is this for sound deadening or does it serve some other purpose? If it is necessary I'll have to find a suitable replacement, if not I'll leave it out.

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post #2 of 2 (permalink) Old 05-16-2012, 06:43 PM Thread Starter
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Originally Posted by mbvis View Post
maybe it's for diffusing the turbulent airflow around the bend.
No. Next?

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