This is a genuine CORTECO oil filler cap, part number 028054P. It is designed to provide a reliable and secure seal for your vehicle's oil filler opening. 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 crankcase, which can lead to premature wear and damage. This CORTECO cap is manufactured to meet stringent quality standards, ensuring a precise fit and durable performance. Replacing a worn or damaged oil filler cap is a simple yet important maintenance task. This part will help maintain optimal engine performance and longevity by keeping your engine oil clean and protected.