This is a genuine CORTECO oil filler cap, part number 220151S. It is designed to provide a secure and leak-free seal for your vehicle's engine oil reservoir. Maintaining a proper seal is crucial for engine health. This cap prevents oil from escaping, which can lead to low oil levels and potential engine damage. It also acts as a barrier against dirt, debris, and moisture from entering the engine oil system, which can cause wear and reduce lubrication effectiveness. Crafted with quality materials, this CORTECO oil filler cap is built to withstand engine bay temperatures and resist degradation over time. Its precise fit ensures easy installation and reliable performance, giving you peace of mind. Ensure your engine's oil system is properly protected with this high-quality CORTECO oil filler cap. It's a simple yet essential component for routine maintenance and long-term engine care.