Genuine OEM Audi Engine Oil Filter Cap, part number 057115433G. This cap is designed to securely seal the engine oil filter housing, preventing oil leaks and ensuring the integrity of the lubrication system. It is typically located at the top or bottom of the oil filter assembly. This cap weighs 0.159 kg. Choosing a genuine OEM cap guarantees a precise fit and the correct material composition, which is essential for maintaining proper oil pressure and preventing contamination of the engine oil.