Product Introduction

• Structure: A high-performance gear-type hydraulic pump constructed from premium aluminum alloy, featuring a precision helical gear drive, an integrated pressure relief valve, and sealed quick-connect fluid ports. It is driven directly by the engine’s accessory drive system for efficient power transfer.

• Performance: Delivers a stable flow of hydraulic fluid at pressures up to 160 bar, ensuring robust steering assist even under extreme loads or at low speeds. The helical gear design ensures ultra-quiet, low-vibration operation, while the aluminum housing provides superior heat dissipation and corrosion resistance.

Core Function

1. High-Pressure Hydraulic Supply: Generates the elevated pressure needed for the steering gear box, reducing driver steering effort by up to 75% for maximum comfort.

2. System Protection: The integrated pressure relief valve and bypass system protect the steering system from overpressure and cavitation, ensuring safe and reliable operation.

3. Quiet & Smooth Operation: The helical gear drive minimizes noise and vibration, making it ideal for long-haul applications.

Power Steering Pump WG9925470037 Sinotruk – Factory-Direct Supply for Heavy-Duty Trucks

Keep Your Sinotruk Fleet Steering Smoothly with the Right Power Steering Pump

When your heavy-duty Sinotruk trucks depend on precise, effortless steering control, the Power Steering Pump WG9925470037 is the component that makes it all possible. This hydraulic steering pump delivers consistent oil pressure to the steering gear, ensuring that drivers can maneuver even fully-loaded vehicles with confidence and minimal effort. Whether you’re managing a logistics fleet or sourcing replacement parts for your workshop, this OEM-grade pump is engineered to meet the exact specifications your Sinotruk vehicles demand.

At Mettlead, we supply this genuine-spec power steering pump directly from our China-based factory network. That means you get competitive factory-direct pricing, verified quality, and fast lead times — without the markup of middlemen. As a result, procurement managers across Africa, the Middle East, Southeast Asia, and Latin America trust us to keep their truck fleets running on schedule and on budget.

Features and Benefits of Power Steering Pump WG9925470037

Precision-Engineered Hydraulic Performance

This power steering pump is purpose-built for Sinotruk HOWO heavy trucks. It generates stable hydraulic pressure to feed the steering gear assembly, which translates into smooth, responsive steering even under heavy payload conditions. In other words, your drivers experience less fatigue and your vehicles maintain better road handling throughout long hauls.

OEM-Grade Durability You Can Count On

Every pump undergoes strict quality control testing before it leaves our facility. The internal vanes, rotor, and seals are manufactured to original equipment tolerances, so you can expect extended service life and fewer unscheduled downtime events. Consequently, your total cost of ownership stays low while fleet uptime remains high.

Seamless Direct-Fit Installation

Because this Power Steering Pump WG9925470037 matches OEM dimensional specs precisely, it bolts directly onto your Sinotruk HOWO chassis without modifications. Mounting points, hose connections, and pulley alignment all correspond exactly to the original part. Therefore, your workshop technicians can complete the replacement quickly, minimizing vehicle downtime.

Key Benefits at a Glance

• Stable hydraulic output – Maintains consistent oil flow and pressure across varying engine RPMs
• Extended service life – High-grade seals and wear-resistant internal components reduce premature failure
• Noise-reduced operation – Precision machining minimizes cavitation and operational noise
• Corrosion resistance – Treated housing withstands harsh operating environments
• Direct OEM replacement – Zero modification needed for Sinotruk HOWO applications

Technical Specifications

Application Scenario: Where Does This Power Steering Pump Fit?

The Power Steering Pump WG9925470037 serves as a critical steering oil supply component in the hydraulic power steering system of Sinotruk HOWO heavy-duty trucks. Specifically, it is designed for vehicles in the HOWO A7, HOWO T7H, and HOWO 371/375 series that use this OEM part number in their steering assemblies.

In practical terms, this pump is the heart of your truck’s steering system. It draws hydraulic fluid from the reservoir, pressurizes it, and delivers it to the steering gear. Without adequate pump performance, drivers struggle with heavy steering, especially at low speeds or during tight maneuvering — a situation that’s both unsafe and inefficient for commercial operations.

Common replacement scenarios include:

• Steering becomes noticeably heavier or unresponsive at low engine speeds
• Whining or groaning noise from the pump area during steering input
• Visible hydraulic fluid leaks around the pump housing or shaft seal
• Scheduled preventive maintenance for high-mileage fleet vehicles
• Rebuilding or refurbishing steering systems after extended service intervals

For more Sinotruk steering system components, browse our dedicated Steering Parts Category. You can also explore our full range of Sinotruk HOWO Truck Parts or visit our comprehensive Sinotruk Parts Catalog for a complete overview.

OEM/ODM Capability

Mettlead understands that different markets have different needs. That’s exactly why we offer flexible OEM and ODM services tailored to bulk buyers and distributors worldwide.

White-Label and Custom Packaging

Need to sell under your own brand? We provide white-label packaging so you can market these power steering pumps with your company logo, part numbers, and branding. Additionally, we accommodate custom box designs, label specifications, and barcode requirements to match your inventory systems seamlessly.

Strict Quality Assurance

Every Power Steering Pump WG9925470037 that leaves our facility passes through a multi-point inspection process. This includes pressure testing, seal integrity verification, and dimensional accuracy checks. As a result, defect rates remain extremely low, protecting your reputation with end customers.

Flexible Order Quantities

Whether you need a small trial order to test market response or a full container load to stock your warehouse, we adapt our production and logistics accordingly. Moreover, our team provides dedicated support from quotation through to delivery, ensuring a smooth procurement experience every time.

Frequently Asked Questions (FAQ)

What are the signs that the Power Steering Pump WG9925470037 needs replacement?

The most common warning signs include heavy or stiff steering feel (especially at low speeds), a whining or groaning noise that increases with steering input, and visible hydraulic fluid leaks near the pump shaft or housing. If you notice any of these symptoms, it’s wise to inspect the pump promptly — delaying replacement can lead to damage in the steering gear itself.

Is this power steering pump an exact OEM replacement for Sinotruk HOWO trucks?

Yes. The Power Steering Pump WG9925470037 is manufactured to match OEM dimensional and performance specifications. It fits directly onto Sinotruk HOWO models that originally use this part number, with no modifications required for mounting, hose connections, or pulley alignment.

What type of hydraulic fluid does this steering pump require?

This pump operates with standard power steering hydraulic fluid as specified in the Sinotruk HOWO maintenance manual. In most cases, a quality ATF (Automatic Transmission Fluid) or dedicated power steering fluid meeting the OEM viscosity grade is recommended. Always refer to your vehicle’s service documentation for the exact specification.

How long can I expect this power steering pump to last?

Under normal operating conditions — with clean hydraulic fluid, proper belt tension, and regular maintenance — this pump is designed to deliver service life comparable to the original factory-installed unit. Typically, that translates to several hundred thousand kilometers of reliable operation. However, service life can vary depending on load conditions, maintenance practices, and operating environment.

Can I order a small quantity for testing before placing a bulk order?

Absolutely. Mettlead supports flexible order quantities specifically to help new customers evaluate product quality before committing to large volumes. Simply reach out to our team with your requirements, and we’ll arrange a trial shipment that fits your needs.

Does the pump come pre-filled with hydraulic fluid?

No. The Power Steering Pump WG9925470037 ships dry to prevent contamination during transit. During installation, your technician should fill the system with the correct hydraulic fluid and bleed the steering circuit according to standard procedures before operation.

Ready to Secure Your Supply of Power Steering Pump WG9925470037?

Getting the right parts at the right price shouldn’t be complicated. At Mettlead, we’ve simplified the process so procurement managers like you can source quality Sinotruk components with confidence — direct from China, with transparent pricing and reliable delivery timelines.

Here’s what happens when you reach out:

1. You send us your inquiry with part number and quantity
2. We respond within 24 hours with pricing, lead time, and shipping options
3. You approve, we produce and ship — with full tracking provided

Whether you need 5 pieces or 500, our team is ready to support your order. We also welcome factory visits for buyers who prefer to inspect quality firsthand.

Contact Us Now to request a quotation for Power Steering Pump WG9925470037 Sinotruk and discover why fleet operators and distributors across 30+ countries choose Mettlead as their trusted parts supplier.