Radiator air duct repair question

[hag1128]

On my 2004 330ci vert I am doing some work on the front bumper. After removal I have some rubber flaps that are part of the radiator air duct that are dried out and falling off. Are these significantly functional to cooling or can I pull them off the rest of the way?
If they are necessary the only repair I see is replacement of the entire air duct. Tried glue and melting to no avail.

Thanks

Randy
2004 330ci vert20180722_155528.jpeg

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[MIKYZZ4]

In extreme conditions you can be sure they will be "significantly functional to cooling",
but under normal conditions you should be fine.
Have you researched replacement part#'s on REALOEM?

[hag1128]

I have sourced the air duct part and it looks like an easy change. This is a non track car but it is 110 today in Texas.
I think at one time there were some around the two upper openings behind the kidney grills. Not a great design - butt glued dissimilar plastic parts.


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