To ensure reliability, purchase GM part # 12623730 Knock Sensor. It is sometimes referred to as Pontiac Knock 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 Pontiac G8, Grand Prix, GTO models.
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