Genuine VW/Audi Turbocharger Boost Solenoid - 078906283A is a direct-fit replacement part for Volkswagen and Audi vehicles. It is designed to replace the OEM part and is backed by a 12-month warranty. It is an electronically controlled valve that helps regulate the amount of boost pressure created by the turbocharger. It is constructed from high-quality materials for maximum durability and reliability.