Tinkering with the X5 and decided to replace the cabin filter. I bougt a Mann filter and swapped it with what was in the car (perhaps original?). The filter that I removed has a platic border with yellow foam rubber around it. The border seems like a good idea and that it should be reusable. But the older filter seems glued on.

My question ... do I reuse the plastic border or do I just insert the new cabin filter?

Much thanks.

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2003 X5 3.0 - Original Owner