【Direct Replacement】: Over time, mud, rust, or worn parts inside the hub will prevent the mechanism from sliding into and lock the hub, causing failure to lock the hub, and further causing symptoms such as increased fuel consumption, noise on the highway, and increased front tire wear. It is recommended that you replace it in time. The locking axle meets or exceeds the oem standard, has passed the factory test, and is perfectly matched with the original car, and can be installed directly.