This pulley is manufactured by the original equipment pulley supplier to ensure proper fit and performance. This pulley is produced for serpentine belt routing applications and conforms to original equipment material, tolerances, and specifications. This replacement part is made in Europe to the O.E. specified design and meets all performance and durability requirements. Heavy duty steel pulley preassembled on a steel mounting bracket. Fits 1997-2005 Audi A4 and VW Passat 1.8L engines.