Product Introduction

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

• Performance: Delivers a stable flow of hydraulic fluid at pressures up to 140 bar, ensuring consistent steering assist even under heavy loads or at low speeds. The helical gear design ensures quiet, low-vibration operation, while the aluminum housing provides efficient heat dissipation and corrosion resistance.

Core Function

1. Hydraulic Pressure Generation: Produces the high-pressure fluid needed to actuate the steering gear box, reducing the driver’s steering effort by up to 70%.

2. System Safety: The integrated pressure relief valve protects the steering system from overpressure damage, maintaining safe and reliable operation.

3. Quiet & Smooth Operation: The helical gear drive minimizes noise and vibration, improving driver comfort during long-haul operation.

Power Steering Pump WG9725476016 Sinotruk – Factory Direct OEM Replacement

When your heavy-duty Sinotruk HOWO truck demands reliable hydraulic steering assistance, the Power Steering Pump WG9725476016 delivers consistent, high-pressure fluid flow to keep your steering system responsive under any load. Engineered to meet OEM specifications, this steering oil supply pump ensures precise directional control, reduced driver fatigue, and extended service life — even in the most demanding operating conditions. Whether you’re maintaining a fleet or sourcing replacement parts for a single unit, Mettlead supplies this genuine-spec component at competitive factory-direct pricing with fast worldwide delivery.

As a specialized supplier of Sinotruk HOWO truck parts, we understand the critical role a well-functioning power steering pump plays in your vehicle’s overall drivability and safety. That’s exactly why we stock the WG9725476016 — one of the most commonly requested steering components in the Sinotruk aftermarket parts catalog.

Key Features and Benefits of the Power Steering Pump WG9725476016

This isn’t just another pump sitting on a shelf. Every unit undergoes rigorous inspection before it ships, so here’s what you can expect once it’s installed on your truck:

• OEM-Grade Performance: Manufactured to match original Sinotruk specifications, ensuring seamless compatibility and reliable operation from day one.
• Stable Hydraulic Pressure Output: Maintains consistent fluid pressure across varying engine speeds, which translates into smooth, predictable steering response whether the truck is maneuvering at low speeds or cruising on the highway.
• Durable Construction: Built with wear-resistant internal components and high-quality seals to minimize leakage and extend service intervals — reducing your total cost of ownership over time.
• Reduced Driver Fatigue: By delivering adequate hydraulic assist, this pump significantly lightens the steering effort required, particularly during heavy-load operations or extended driving shifts.
• Quiet Operation: Precision-machined internal gears reduce noise and vibration, contributing to a more comfortable cab environment.
• Direct Bolt-On Replacement: The mounting dimensions, pulley alignment, and port configurations match the original unit perfectly, so installation is straightforward without any modifications.

In other words, when you choose this power steering pump, you’re choosing a component designed to keep your trucks on the road and your maintenance costs predictable. Moreover, because it meets the same tolerances as the factory-installed part, you won’t sacrifice warranty compliance or long-term reliability.

Technical Specifications – Power Steering Pump WG9725476016

For technical engineers and procurement professionals who need the hard numbers before ordering, here’s a detailed breakdown of this component’s specifications:

Note: If you need additional technical details such as exact flow rate curves or dimensional drawings, please don’t hesitate to contact us directly. Our engineering team can provide supplementary documentation upon request.

Application Scenario – Where Does This Power Steering Pump Fit?

The Power Steering Pump WG9725476016 is specifically designed as a steering oil supply component for Sinotruk heavy-duty trucks. Here’s where it belongs in your fleet:

• Compatible Truck Models: Sinotruk HOWO, HOWO A7, HOWO T7H, and related CNHTC chassis platforms equipped with hydraulic power steering systems.
• System Function: Serves as the primary steering fluid supply pump, converting engine mechanical power into hydraulic pressure that assists the steering gear in turning the front axle.
• Typical Replacement Scenarios: Steering becomes heavy or inconsistent; whining noise from the pump area; visible fluid leakage around seals or fittings; low steering fluid level without external leaks (internal bypass wear).
• Operating Environment: Engineered for long-haul highway transport, construction-site haulage, mining logistics, and urban delivery — essentially anywhere Sinotruk HOWO trucks operate under demanding conditions.

If you’re managing a mixed fleet that includes multiple Sinotruk models, you can explore our full range of steering system components to find matching parts for every chassis in your lineup.

OEM / ODM Capability – Custom Packaging and White-Label Solutions

At Mettlead, we understand that distributors and wholesalers often need more than just a quality part — you need it packaged and branded in a way that strengthens your own market presence. That’s why we offer flexible OEM and ODM services for the Power Steering Pump WG9725476016 and our entire parts catalog:

• White-Label Packaging: We can supply this steering pump in neutral or customer-branded boxes, complete with your logo, part number cross-references, and localized documentation.
• Custom Labeling: Adhesive labels or laser-engraved markings on the pump body can be arranged for bulk orders, helping your brand gain recognition in the aftermarket.
• Strict Quality Control: Every pump is bench-tested for pressure output, leakage, and noise levels before it leaves our facility. We maintain full traceability from raw material to finished product.
• Flexible MOQ: Whether you need a trial order of a few units or a container-load for distribution, we accommodate orders of varying sizes without compromising lead times.

In addition, our factory welcomes on-site visits and audits. If you’d like to inspect our production lines, test facilities, or quality control processes firsthand, we’re happy to arrange a tour. Simply reach out to our team to schedule your visit.

Frequently Asked Questions – Power Steering Pump WG9725476016

1. How do I know if my power steering pump needs replacing?

Several symptoms suggest the WG9725476016 pump is failing. First, you may notice the steering wheel becomes noticeably heavier, especially at low speeds or when turning at full lock. Second, a high-pitched whining or groaning noise — particularly during steering maneuvers — typically indicates internal vane wear or cavitation. Third, visible hydraulic fluid leaks around the pump shaft seal or outlet fittings signal that seals have deteriorated. If you observe any combination of these signs, a replacement pump will restore proper steering assist and prevent cascading damage to the steering gear.

2. Is this power steering pump an exact OEM replacement for WG9725476016?

Yes. This pump is manufactured to match the original Sinotruk specifications for part number WG9725476016. The mounting bolt pattern, drive spline/pulley dimensions, pressure and flow ratings, and port thread sizes all correspond to the factory-installed unit. As a result, you can install it as a direct swap without any bracket modifications or adapter fittings.

3. What type of steering fluid should I use with this pump?

You should use the power steering fluid or ATF grade specified in your Sinotruk HOWO owner’s manual. Typically, this means a high-quality ATF Dexron III or equivalent meeting CNHTC’s steering system fluid specification. Using the wrong fluid type can accelerate seal degradation and reduce pump lifespan, so always verify before filling.

4. How long does this steering pump typically last?

Under normal operating conditions with proper fluid maintenance, you can expect the WG9725476016 power steering pump to deliver reliable service for 150,000–250,000 km or more. However, factors such as contaminated fluid, overloaded vehicles, and neglected maintenance intervals can shorten its operational life. Regular fluid checks and timely filter replacement go a long way toward maximizing pump longevity.

5. Can I order this pump with my own brand packaging?

Absolutely. Mettlead provides white-label and custom packaging services for all our Sinotruk replacement parts, including the WG9725476016 power steering pump. Simply provide your branding artwork and packaging requirements, and our team will handle the rest. This is particularly popular with regional distributors looking to build their own aftermarket brand identity.

6. Do you supply other steering system parts for Sinotruk trucks?

We do. Beyond the power steering pump, our inventory covers steering gearboxes, drag links, tie rod ends, pitman arms, steering columns, and related hydraulic hoses — all for Sinotruk HOWO and SITRAK platforms. You can browse our complete steering parts category or visit our comprehensive Sinotruk truck parts page for a wider selection.

Ready to Order? Get a Fast Quote Today

Whether you need a single Power Steering Pump WG9725476016 for an urgent repair or a bulk shipment to restock your warehouse, Mettlead is ready to support you with competitive factory-direct pricing, reliable quality, and responsive logistics.

Here’s what happens next when you reach out:

1. Send Your Inquiry: Share the part number (WG9725476016), required quantity, and your delivery destination.
2. Receive Your Quote: Our team responds within 24 hours with pricing, lead time, and shipping options.
3. Confirm and Ship: Once payment is arranged through our secure, flexible channels, we dispatch your order promptly with full tracking visibility.

Don’t let a failing steering pump keep your trucks off the road longer than necessary. Contact us now to get your quote and keep your fleet moving with confidence.