To ensure reliability, purchase GM part # 21210000 Valve Asm, Secondary Air Injection Shutoff & Check. It is sometimes referred to as GM Air Inject Check Valve, GM Diverter Valve, GM Secondary Air Injection Check 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 Saturn SC1, SW1, SW2 models.
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