Repalce: Detroit Diesel A4721800109, A4721800309; Mercedes-Benz A4721800309, A4721840525; Donaldson P551005, As ISO/TS16949:2009 certified factory, RockFilter Ecological oil filter elements with features: 1. Premium quality filtration media with scientific folding method to keep the best performance; 2. Good quality rubber gaskets to guarantee the perfect sealing ability; 3. Each packed with PVC shrink bag to keep filter clean station with premium performance, guarantee the engine works safel