Product Introduction 3407010LD300 Power Steering Pump is the core hydraulic power unit for HFCN721 light truck steering system. Driven by engine belt, it pressurizes steering fluid to offer power assistance and cut down steering effort for drivers. This aftermarket replacement pump fixes stiff steering, whining noise, power assist failure and fluid leakage resulting from internal component wear, seal aging or damaged pump housing of original pumps, ensuring easy and stable steering operation under full load and low-speed maneuvering.
Product Advantages Precision internal rotor structure delivers stable hydraulic output with low pulsation and noise level. Reinforced sealing structure resists oil leakage under varying working pressure. High-strength cast housing can endure vibration and impact from rough roads. Each unit undergoes hydraulic pressure testing before leaving factory to verify performance, reducing steering breakdown risk and lowering overall maintenance cost for commercial vehicles.
| Item | Parameter |
|---|---|
| Part Number | 3407010LD300 |
| Product Name | Power Steering Pump |
| Compatible Model | HFCN721 |
| Housing Material | High Strength Cast Alloy |
| Feature | Stable Hydraulic Output, Low Noise |
| MOQ | Negotiable |
| Application | Light Truck Hydraulic Steering System |
Applicable Models Designed for JAC HFCN721 light truck series, compatible with original hydraulic steering assembly for cargo and logistics delivery vehicles.





FAQ
Q1: What noise will a faulty power steering pump produce?
A1: A noticeable whining or groaning sound when turning the steering wheel, especially at low speeds.
Q2: Do I need to flush the steering system after pump replacement?
A2: Yes, flush old fluid and bleed air thoroughly to avoid premature damage to new pump.
Q3: Can low steering fluid damage the power steering pump?
A3: Absolutely, insufficient fluid will cause cavitation and burn out internal pump components.