To ensure reliability, purchase GM part # 84190337 Insulator, Front Coil Spr. It is sometimes referred to as GM Coil Spring Insulator. 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 ATS, CT4, CTS models.
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