This is a genuine CORTECO oil filler cap, part number 220111S. Designed to provide a reliable and secure seal for your vehicle's engine oil reservoir, this cap is essential for preventing oil leaks and maintaining the integrity of your engine. Crafted with quality materials, the CORTECO 220111S oil filler cap ensures durability and a precise fit. Proper sealing of the oil filler cap is crucial for engine health, as it prevents contaminants from entering the oil system and helps maintain optimal oil pressure. Replacing a worn or damaged oil filler cap with this CORTECO part will help ensure your engine operates smoothly and efficiently. It's a straightforward component that plays a vital role in the overall maintenance and performance of your vehicle.