Dorman 600-101 4WD Actuator DIRECT REPLACEMENT: This Dorman 4WD actuator is specifically engineered to match the original design and performance of the original 4WD actuator on select Cadillac, Chevrolet, GMC and Isuzu vehicles. COMPLETE INSTALLATION: Includes all necessary gaskets and seals for a complete repair. SUPPORT AVAILABLE: If you have any trouble, every Dorman part is backed by Dorman's ASE Blue Seal Certified technical support team. WEATHER-RESISTANT: Sealed to prevent water intrusion and to withstand exposure to hard road and weather conditions. ENSURE FIT: To make sure this fits your exact vehicle, input your year, make, model and trim into the Amazon Garage. Original Equipment (OE) Numbers: 26060073, 8-26060-073-0 Engineered to reduce failures A quality part backed by a Dorman limited lifetime warranty Engineered to reduce failures A quality part backed by a Dorman limited lifetime warranty