The Dorman 27.5" Spine / Lock Windshield Wiper Arm is a reliable replacement for an original wiper arm that has failed due to spring wear, snow damage or metal fatigue. This wiper arm is made from quality materials to ensure reliable performance and long service life. It is designed to match the fit and function of the original arm on specified vehicles, such as Kenworth. This wiper arm is a great choice for restoring your vehicle's windshield wiper system. FleetPride is your First Click in Heavy Duty®.