Genuine OEM BMW collar screw, part number 11127568296. This specialized fastener is used to secure engine components, such as valve covers or lids, ensuring a tight and reliable seal. It features an integrated rubber bushing and washer assembly to provide vibration dampening and prevent fluid leaks. This screw is engineered to specific torque requirements for the engine assembly. Genuine OEM fasteners are essential for maintaining the correct clamping force and sealing integrity required for long-term engine reliability.