This is a genuine CORTECO oil filler cap, part number 220050H. It is designed to provide a precise and secure fit for your vehicle's oil reservoir. A properly functioning oil filler cap is crucial for maintaining the integrity of your engine's lubrication system. It prevents dirt, debris, and moisture from entering the engine oil, which can lead to premature wear and damage. Crafted with durable materials, this CORTECO cap is built to withstand the demanding conditions under the hood, offering long-lasting performance and reliability. Ensure your engine stays protected by replacing a worn or missing oil filler cap with this quality part. Installation is straightforward, typically requiring no special tools. Always refer to your vehicle's service manual for specific replacement procedures.