The ELRING 821.290 oil sump plug is a crucial component for maintaining your vehicle's engine oil system. It is engineered to provide a secure and leak-free seal for the oil drain plug opening on the engine's oil pan. Properly functioning oil sump plugs are essential for preventing oil leaks, which can lead to low oil levels and potential engine damage. This plug from ELRING is manufactured to meet stringent quality standards, ensuring reliable performance and durability. Regular inspection and replacement of the oil sump plug, especially during oil changes, is recommended to ensure the integrity of your engine's lubrication system. This part ensures that your engine oil remains contained and your engine operates smoothly.