To ensure reliability, purchase GM part # 1997173 Solenoid Assembly, Egr Control Valve Relay. It is sometimes referred to as Buick EGR Vacuum Solenoid, Buick EGR Valve. 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.
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