The Mann W930/21 Oil Filter is a high-quality engine part designed specifically for Audi A4, A6, S4, and S6 models, as well as VW Passat vehicles. Made in Germany, this oil filter ensures a perfect fit and reliable performance with its OE/OEM part numbers 078 115 561 H and 078 115 561 J. With a strong brand reputation and specific manufacturer part number W93021, this oil filter is a dependable choice for maintaining optimal engine health and efficiency in your vehicle.