I replaced the door check strap in one of my rear door because it was making the usual noise when opening or closing the door. That was about 8 months ago. Well I had to do it again today because it was rusted. They did not have the plastic covers. This time I got the door check strap with the plastic cover that hopefully, will help with humitidy. Make sure you get them WITH the covers.

Good luck!

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J.H.
'86 300E