Tire Valve Stem Cap
#1
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Join Date: Dec 2013
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ML350, GL550
Tire Valve Stem Cap
My GL550 finally came in yesterday and today I noticed that the tire valve stems have green plastic caps. Is something missing? IMO they look terrible, although it took me 24 hours to notice!
#4
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Join Date: Mar 2003
Location: Suburban Chicago
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2013 GL550
Yes - Green caps indicate nitrogen fill. You can replace with anything that Nanook posted but make sure they are made of either plastic or aluminum. Caps made with other metals may interact with the aluminum valve stem and corrode on there, making removal difficult at best. Ask me how I know.
Bruce
Bruce