This product is a Genuine VW Volkswagen Engine Oil Filler Cap Gasket with part number 078133287B. It is designed to fit and seal the engine oil filler cap on select VW vehicles, ensuring a tight and secure fit to prevent any leaks. This gasket is made of high-quality materials and is an authentic replacement part from VW. It is compatible with various VW models and is a reliable choice to maintain the proper functioning of your vehicle's engine.