To ensure reliability, purchase GM part # 20371801 Plug, Front Door Inner Panel At Mirror. It is sometimes referred to as Buick Body Mount Hole Plug. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Buick Roadmaster, Terraza models.
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