This product is a genuine VW/Audi exhaust manifold bolt and spring, with the part number 4B0253205G. It is designed specifically for use in VW and Audi vehicles and is used to secure the exhaust manifold in place. The bolt and spring are made from high-quality materials and are manufactured to the exact specifications of the original equipment. This ensures a perfect fit and reliable performance. This product is an essential component for the proper functioning of the exhaust system in VW and Audi vehicles.