The factory center support bearing carrier secures the driveshaft using a very thin layer of rubber, which allows for minimal movement to prevent noise and vibration inside the cabin. However, this design doesn't effectively maintain the bearing's alignment under load, leading to sagging over time and misalignment of the driveshaft, resulting in slack during gear shifts and throttle application. The original rubber bushing can deteriorate and become brittle, eventually developing cracks, even in well-maintained vehicles, often within 5-10 years. When the bushing deteriorates, it can cause increased vibrations, clunking sounds, and additional stress on the bearing. Furthermore, the stock carrier is permanently attached to the center support bearing, making replacement without specialized tools a challenging task.