To ensure reliability, purchase GM part # 12565503 Valve Assembly, Secondary Air Injection Check. It is sometimes referred to as Cadillac Air Inject Check Valve, Cadillac Diverter Valve, Cadillac 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 Cadillac Fleetwood models.
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