Replace the wheel locking system of your 24" self-propelled snow blower (models #85807 / #86898) with this complete replacement assembly. The kit includes the locking mechanism and all required components for proper operation. This drivetrain mechanism limits the difference in rotational speed between the two drive wheels, improving overall traction. It automatically transfers engine torque to the wheel with the best grip, helping reduce wheel spin and ensuring better control on snow and icy surfaces. Durable and designed for a precise fit, this system restores your snow blower’s traction and maneuverability for reliable performance in demanding winter conditions.