0501330690 Ball Cage, compatible with ZF 12-speed and 16-speed gearboxes. Manufactured with high-toughness precision material, it features solid structure against loosening and cracking. With high processing accuracy matching original parts, it fits perfectly with steel balls and matching components for smooth operation without jamming. It boasts outstanding compression and wear resistance to withstand frequent impact and load during gearbox operation and lower failure risks. Dust and corrosion resistant, it adapts to harsh driving environments and maintains efficient transmission performance for a long time.