This is a genuine CORTECO oil filler cap, part number 220125S. Designed to provide a secure and leak-proof seal for your vehicle's oil system. Maintaining a proper seal on your oil filler cap is crucial for 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 damaged or missing cap can also result in oil leaks, leading to low oil levels and potential engine damage. The CORTECO 220125S is manufactured to meet or exceed original equipment specifications, ensuring a perfect fit and reliable performance. Trust CORTECO for quality sealing solutions that protect your engine.