This is a genuine CORTECO oil filler cap, part number 016321H. It is designed to provide a secure and leak-proof seal for your vehicle's oil filler opening. Maintaining a proper seal is crucial for engine health. This cap prevents dirt, debris, and moisture from entering the engine oil, which can lead to premature wear and damage. It also ensures that oil does not escape the engine, preventing potential low-oil situations. Crafted with quality materials, this CORTECO oil filler cap is built to withstand the temperatures and pressures found under the hood. Its precise fit ensures easy installation and reliable performance. Replace your old or damaged oil filler cap with this high-quality part from CORTECO to maintain the integrity of your engine's lubrication system.