To ensure reliability, purchase GM part # 12686810 Rail Assembly, F/Injn Fuel (Left Hand). It is sometimes referred to as GMC Fuel Rail. 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 GMC Sierra models.
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