AF25557 - AF25558 - AF25558 Fleetguard Air Filters Set, Replaces (Donaldson P828889-P829333, Baldwin RS3544-RS3545) AF25557 Air, Primary Magnum RS / Overall Length 355.34 mm (13.99 inch) / Largest OD 163.06 mm (6.42 inch) / Largest ID 95 mm (3.74 inch) / Fin Diameter 0 mm (0 inch) / Primary Air Filter Used With AF25558 AF25558 Air, Secondary Magnum RS / Overall Length 334.3 mm (13.161 inch) / Largest OD 90.5 mm (3.563 inch) / Largest ID71.4 mm (2.811 inch) / Secondary Element Used With AF25557 Replaces: Donaldson P828889 - P829333, Baldwin RS3544 - RS3545, Perkins 26510342 - 26510343 Filter Used With: AH19095, AH19096, AH19098 AF25557 Air, Primary Magnum RS: Filter Used With AH19095- AH19096 - AH19098 AF25558 Air, Secondary Magnum RS Replaces AF25485- Filter Used WithAH19096 Safety, AH19098 Safety.