To ensure reliability, purchase GM part # 9421743 Plug,Cup Expansion 3/8 Steel Plain(Also Used In 7B1C Ss127). 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 Escalade models. It fits Chevrolet Blazer, Silverado, Tahoe. It also fits GMC Sierra, Suburban, Yukon. This also fits Pontiac 6000.
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