To ensure reliability, purchase GM part # 12589978 Thermostat Bypass Hose Assembly. It is sometimes referred to as Chevrolet Cooling Hose, Chevrolet Coolant Pipe. 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 Chevrolet Impala, Malibu, Monte Carlo models.
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