This is a genuine CORTECO oil filler cap, part number 220154S. Designed to provide a secure and leak-proof seal for your vehicle's engine oil reservoir. Properly sealing the oil filler cap is crucial for maintaining engine health. It prevents dirt, debris, and moisture from entering the crankcase, which can lead to premature wear and contamination of the engine oil. A faulty or missing cap can also result in oil leaks, leading to low oil levels and potential engine damage. CORTECO is known for producing high-quality sealing solutions for the automotive industry. This oil filler cap is manufactured to meet or exceed original equipment specifications, ensuring a perfect fit and reliable performance. Replacing a damaged or worn-out cap with this genuine CORTECO part will help maintain your engine's integrity and longevity.