This is a genuine CORTECO oil filler cap, part number 220135S. It is designed to provide a secure and leak-free seal for your vehicle's oil filler opening. Proper sealing of the oil filler cap is crucial for maintaining engine health. It prevents dirt, debris, and moisture from entering the engine oil, which can lead to premature wear and damage. A faulty or missing cap can also result in oil leaks, leading to low oil levels and potential engine overheating. CORTECO is a trusted brand known for its high-quality sealing solutions. This oil filler cap is manufactured to meet stringent industry standards, ensuring a perfect fit and long-lasting performance. Replacing a worn or damaged oil filler cap with this genuine CORTECO part will help maintain your engine's integrity and prevent costly repairs.