Genuine OEM Audi Crankcase Housing Seal, part number 079103121CJ. This precisely engineered seal is designed to create a tight, leak-proof barrier for the crankcase housing, preventing oil loss and contamination. It is critical for maintaining engine lubrication and cleanliness. Weighing just 1 gram and measuring approximately 6 cm in length, this seal is made from high-quality, oil-resistant rubber. Using a genuine OEM seal guarantees the correct material composition, dimensional accuracy, and resistance to engine fluids and temperatures, ensuring a durable and effective seal.