To ensure reliability, purchase GM part # 20513729 Nut, Power Antenna *Black*. 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 Electra, Lesabre, Park Avenue models. It fits Oldsmobile 98, Delta 88. It also fits Pontiac Bonneville.
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