This is a genuine CORTECO oil filler cap, part number 220117S. Designed to meet the specific requirements of your vehicle, it provides a reliable and secure seal for the oil filler opening. A properly functioning oil filler cap is crucial for maintaining the integrity of your engine's lubrication system. It prevents dirt, debris, and moisture from entering the crankcase, which can lead to premature wear and damage. It also ensures that oil does not leak out, which can cause low oil levels and potential engine overheating. CORTECO is known for producing high-quality sealing solutions, and this oil filler cap is no exception. It is manufactured with durable materials to withstand the heat and chemical exposure typically found in the engine bay, ensuring long-lasting performance and peace of mind.