Hydraulic Filter Part No.: 1R0735, 1R0736, 1R0777, 4T0522, HD1361, PT91

Replaces: Caterpillar 4T0522; As ISO/TS16949 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 safely.