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This AC serpentine drive belt tensioner kit is designed to be compatible with various vehicles. It fits part numbers: 19311139, 38159, 90K-38159, and ACK040378HD. This AC Belt Tensioner is built with high-quality materials for durability and reliable performance. Fits vehicles from 1999-2008 including Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD, Sierra 2500, Sierra 2500 HD, Sierra 3500 HD, Savana 1500 2500 3500, and Yukon / Yukon XL 1500 & 2500. Also fits 1999-2008 Silverado 1500, Silverado 1500HD, Silverado 2500, Silverado 2500 HD, Silverado 3500, and Avalanche models. Compatible with 2002-2008 Escalade, Cadillac Escalade EXT, 2003-2008 Cadillac Escalade ESV, and Hummer H2. The serpentine drive belt tensioner assembly kit enhances engine performance by maintaining proper pressure and tension on the drive belt. Easy installation process, functioning smoothly without noise. Package Dimensions: 13.39 x 6.3 x 2.76 inches.
