To ensure reliability, purchase GM part # 25509274 Plug, Exhaust Manifold Oxygen Sensor. 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 models. It fits Cadillac Deville, Escalade, Fleetwood. It also fits Chevrolet Camaro, Silverado, Tahoe. This also fits GMC Sierra, Suburban, Yukon.
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