The dealership should be able to order the drain plug, I was also missing this plug along with the bump pad used for lifting the vehicle and I had the dealer ordered both, this was sometime ago, maybe two years or so. The problem I am having now is that the drain plug keep getting clogged up and wont drain properly during heavy rain, unless I keep poking it, clearing out the debris, somehow it gets clogged during each rainfall.

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benzino