This is a genuine CORTECO oil filler cap, part number 220138S. Designed to provide a tight seal for your vehicle's oil system, it is crucial for preventing oil leaks and maintaining optimal engine performance. The cap is manufactured to meet stringent quality standards, ensuring durability and a perfect fit. Regular inspection and replacement of the oil filler cap can prevent dirt and debris from entering the engine, which could lead to premature wear. Ensure you are purchasing the correct part for your vehicle's make and model. This CORTECO cap is a reliable choice for maintaining the integrity of your engine's lubrication system.