Replace Strut Fitment: 1999-2006 Chevy Silverado 1500 4WD, 2003-2005 Chevy Silverado 1500 AWD, 2007 Chevy Silverado 1500 Classic 4WD, 2001-2006 GMC Sierra 1500 AWD, 1999-2006 GMC Sierra 1500 4WD, 2007-2007 GMC Sierra 1500 Classic 4WD, 2007-2007 GMC Sierra 1500 Classic AWD Replace Quick Struts Assembly Number: 58637 Easy to install: Direct replacement, install the complete strut assembly in one step. Just simple, fast, and effortless installation Exceptional Cushioning Effect: The struts quickly dampen vibrations from the frame and body, enhancing ride comfort and providing a smoother, safer driving experience across various terrains High Performance: These quick struts offer control and durability. O-rings keep out dirt and moisture, while high-performance steel resists deformation and corrosion for long-lasting use. (Professional installation would be highly recommended.)