This engine belt tensioner is a genuine OEM replacement part for 2013-2014 Cadillac ATS models with 2.0L or 2.5L engines. It is a direct fitment type and has an interchange number of 310-999933. The tensioner is in used condition and is compatible with other belt parts. The item ID is 23C9107E-ACAB-49BA-98FF-BD64C0334426 and is currently in stock (0501). Buy with confidence knowing that this tensioner will fit perfectly in your Cadillac ATS and keep your engine running smoothly.