Genuine OEM Hyundai Fuel Pump Locking Ring, part number 311520W000. This critical component is designed to securely fasten the fuel pump or fuel sender unit assembly into the fuel tank opening. It ensures a tight, leak-free seal, preventing fuel evaporation and maintaining system pressure. The ring is made from durable metal, featuring a slotted design for proper engagement and tightening. Using a genuine OEM locking ring guarantees the correct dimensions, material strength, and sealing properties required for safe and reliable fuel system operation.