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| Component Type | Hydraulic Power Steering Pump |
| Pump Mechanism | Gerotor / Vane Type |
| Rated Pressure | 10.3 - 13.8 MPa (1500 - 2000 PSI) |
| Rotation Direction | Clockwise (Viewed from Drive End) |
| Mounting Standard | SAE 2-Bolt Flange |
| Port Configuration | SAE O-Ring Boss / NPTF |
| Fluid Compatibility | ATF Dexron III / Mercon / PSF |
| Housing Material | Cast Iron |
| Net Weight | 6.2 kg |
Manufacturer No.
4988390
OEM Part No.
49883903900254390028049883253900071
Engine Part No.
Cummins 4BT3.9Cummins 6BT5.9Cummins 4B3.9Cummins 6B5.9Cummins 6CT8.3Cummins 6CTA8.3
Interchange No.
3900254390028049883253900071
Fitment Vehicles
Dongfeng TianlongDongfeng Heavy Duty TrucksConstruction ExcavatorsIndustrial Power UnitsWheel LoadersMotor Graders
Hydraulic Systems - Industrial Encyclopedia
OEM replacement power steering pump assembly part number 4988390 for Cummins 4BT3.9 6BT5.9 and 6CT8.3 diesel engines. Direct fit for Dongfeng Tianlong heavy trucks.