1、OE NUMBER: The referencing OE number of the actuator are 12471631, 12471623, 15884292, 600115, 600‑103, 12479081, 12479302, 12471625, 12471627, 12471628. 2、APPLICABLE MODELS: Fits 4WD AWD vehicles for Rainier 2004‑2007, for Trailblazer 2002‑2009, for Envoy XL 2002‑2006, for Envoy XUV 2004‑2005, for Isuzu Ascender 2003‑2008 and more. 3、HIGH PERFORMANCE: Easily locate beside the passenger side of the oil pan, opposite of the front differential. Allows the front wheels to spin independently and the front prop shaft to remain still in 2WD mode. 4、PREMIUM MATERIALS: Manufactured from high strength metal materials, wear resistant and can withstand frequent daily use, to ensure long term durability. 5、EASY INSTALLATION: Designed for simple installation, saving you time and hassle. Get your car back on the road quickly with this high grade replacement part.