Tyre valve dust caps - Alfa Romeo Forum
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Status: I have an Italian car problem
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Warning Tyre valve dust caps

Dear All,

I have just spent over two hours trying to remove some very nice stainless steel 'Alfa Romeo' tyre valve dust caps from my car. They are and look fantastic but......and here is the word of warning, don't fit the anti theft grub screws as they rust and you can't get them out.

I have tried WD40 and leaving them.
I have tried a screw removing bit
I have tried drilling them out gently with a slightly oversized bit.

And in the end had to take the car to my local Kwik ***** where it cost me £20 to have four new valves put in!

It's easier to let someone nick them and buy another set on EBay!
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Re: Tyre valve dust caps

same is true of all metal caps (even without locking mechanisms) unless the metals are of the same type you will always get corrosion (electrolosis) between the aluminium cap thread and the brass valve thread. so either unscrew them regularly or use protective grease .
Or there will come a point when you will have to have the whole valve replaced. (been there done that!)
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