Air filter housing seal

[nodger]

The top cover of the air filter housing in my W208 doesn't seem to make a clean seal with the box itself. How important is it for a complete seal to be made? I understand that you don't want dust and dirt being sucked in, I'm just wondering if it's supposed to be air-tight for performance reasons?

I was thinking of laying a thick line of silicone sealant around the top of the box and allowing it to dry before attaching the lid. Would this be OK?

Thanks in advance.

 

[television]

Is it a genuine or correct filter do you know,,, they are normally a very good fit

 

[nodger]

Is it a genuine or correct filter do you know,,, they are normally a very good fit

Hi Malcolm,

Yes, I think the filter itself is a perfect fit. The top cover just seems to be very slightly warped, possibly due to being incorrectly fitted over a long period of time. I just took a look at it and all of the clips are secured correctly, but the rim between the box and the cover doesn't seem uniform all the way around. I suppose I'll ask the dealer how much a new box would cost, just to be on the safe side.

Thanks.

 

[television]

If the filter fits well does it really matter then about the top lid

 

[Roxie]

I was thinking of laying a thick line of silicone sealant around the top of the box and allowing it to dry before attaching the lid. Would this be OK?

This will only be of use if you never want to take the lid off ever again.

 

[nodger]

If the filter fits well does it really matter then about the top lid

I suppose my concern was that if air (whatever about dust/dirt) is leaking into the box after the filter, that it might affect some measurement of airflow/pressure that might be taken by the system. I'm a complete novice though, it was just a thought

 

[nodger]

This will only be of use if you never want to take the lid off ever again.

Well I was planning to let the silicone dry before reattaching the lid. Would the heat of the engine bay 'melt' it again?