Genuine OEM Audi Oil Filter Housing Cap, part number 045115433E. This cap is designed to securely cover and seal the oil filter housing, preventing oil leaks and protecting the filter from external contaminants. It is typically located on top or side of the engine, enclosing the cartridge-style oil filter. Weighing 0.152 kg and likely made of durable plastic, this genuine OEM cap ensures a precise fit and proper sealing, critical for maintaining engine lubrication and preventing costly oil loss.