This is a genuine CORTECO oil filler cap, part number 220153S. Designed to provide a secure and reliable seal for your vehicle's engine oil reservoir, this cap is essential for preventing oil leaks and protecting the engine's internal components from dirt and moisture. Crafted with durable materials, the CORTECO 220153S oil filler cap is built to withstand the demanding conditions of the engine bay. Its precise fit ensures easy installation and a snug closure, maintaining the integrity of your engine's lubrication system. Regular inspection and replacement of your oil filler cap can help prevent costly engine damage.