Product Introduction

This 2-3 way solenoid valve WG9718710003 is a precision-engineered OEM solenoid valve for heavy duty trucks, designed to control pneumatic system functions in commercial vehicle braking and auxiliary systems. It features a robust chrome-plated metal body, integrated electrical connector, and multiple pneumatic ports, built to deliver reliable, responsive fluid control in heavy-load operations.

Performance

• Responsive Control: This heavy duty 2-3 way solenoid valvedelivers fast, precise actuation, ensuring accurate pneumatic system regulation for braking, suspension, or auxiliary functions as a high performance solenoid valve.

• Durable Construction: The chrome-plated metal body and corrosion-resistant internal components resist vibration, temperature fluctuations, and road debris, extending service life in harsh undercarriage environments.

• Leak-Proof Design: Precision-machined pneumatic ports and O-ring seals prevent air leaks, maintaining consistent system pressure and making it a reliable replacement solenoid valve.

• Wide Compatibility: Designed to fit most heavy-duty truck pneumatic systems, it is ideal as a 2-3 way solenoid valve for commercial vehicles.

Core Function

1. Controls the flow of compressed air in pneumatic systems, enabling precise regulation of braking, suspension, or auxiliary functions—a critical part of heavy duty truck brake parts.

2. Ensures responsive system actuation, maintaining consistent performance under heavy loads and long downhill runs.

3. Prevents air leaks and pressure loss, maintaining the integrity of the pneumatic system.

4. Fully OEM-compatible for seamless replacement, restoring the control function of the pneumatic system.

2-3 Way Solenoid Valve WG9718710003 – OEM Sinotruk Sitrak Pneumatic Control Valve

When your heavy-duty truck’s braking system demands precise, split-second pneumatic control, this 2-3 way solenoid valve WG9718710003 delivers exactly that. Engineered as a genuine OEM replacement for Sinotruk Sitrak commercial vehicles, this solenoid valve governs critical air circuit switching in braking and auxiliary pneumatic systems. Its chrome-plated metal body, integrated electrical connector, and multi-port pneumatic design ensure responsive, leak-free fluid control — even under the most punishing heavy-load conditions. Whether you’re managing a fleet or sourcing parts for aftermarket repair, this valve keeps your trucks running safely and efficiently.

Key Features and Benefits of the WG9718710003 Solenoid Valve

This isn’t just another replacement part — it’s a precision component that your pneumatic braking system relies on every single day. Here’s why procurement managers across Africa, the Middle East, and Southeast Asia trust this valve:

• Genuine OEM Specification: Manufactured to match the exact dimensional and performance standards of the original Sinotruk Sitrak factory part, so you get a perfect drop-in fit without modifications.
• 2-3 Way Switching Design: Provides flexible air circuit routing, allowing the valve to control multiple pneumatic pathways for braking boosters, auxiliary air systems, and exhaust brake circuits.
• Chrome-Plated Metal Body: Resists corrosion, withstands vibration, and maintains structural integrity across extreme temperature ranges — built for trucks that operate in harsh environments.
• Integrated Electrical Connector: The sealed plug-in connector ensures a secure, weatherproof electrical connection to the vehicle’s ECU, reducing the risk of signal loss or short circuits.
• Rapid Response Time: The solenoid actuator switches in milliseconds, delivering the fast pneumatic response that modern electronically-controlled braking systems require.
• Multiple Pneumatic Ports: Engineered with precision-machined inlet and outlet ports for reliable, leak-free connections to your truck’s existing air lines.
• Extended Service Life: High-quality internal seals and a durable solenoid coil ensure consistent performance over hundreds of thousands of kilometers.

In other words, this WG9718710003 solenoid valve gives you OEM reliability at a factory-direct price — which means less downtime, fewer warranty claims, and more confidence in every shipment you send to your customers.

Technical Specifications

Application Scenarios – Where This Solenoid Valve Works

Understanding exactly where and how this part fits helps you make a faster, more confident purchasing decision. The 2-3 way solenoid valve WG9718710003 is specifically designed for the following applications:

Compatible Truck Models

• Sinotruk HOWO heavy-duty truck series
• Sitrak C7H / C5H tractor and cargo truck platforms
• Other CNHTC-platform vehicles using the WG9718710003 pneumatic valve specification

System Applications

• Pneumatic Braking System: Controls air pressure routing to brake chambers, enabling precise braking force distribution.
• Exhaust Brake Circuit: Manages the air signal that activates the engine exhaust brake for downhill retardation.
• Auxiliary Air Systems: Switches air supply to secondary systems such as differential locks or PTO engagement.

When to Replace

If your truck is experiencing any of the following symptoms, the solenoid valve likely needs replacement:

• Delayed or unresponsive braking auxiliary functions
• Audible air leaks near the valve body
• ECU fault codes related to pneumatic circuit control
• Exhaust brake failing to engage or disengage properly
• Intermittent loss of air-controlled functions after electrical connector inspection

Replacing a faulty solenoid valve promptly prevents cascading damage to downstream pneumatic components — and more importantly, keeps your drivers safe on the road.

Browse more genuine replacement parts for this platform on our Sitrak Heavy-Duty Parts page, or explore our full Braking System Components catalog.

OEM / ODM Capability and Supply Advantages

As a procurement manager, you need more than just the right part — you need a supplier who understands your business. Here’s what Mettlead brings to the table:

• Factory-Direct Pricing: We eliminate middlemen, which means you get competitive unit costs that protect your margins — especially on bulk orders.
• White-Label & Custom Packaging: Want your own brand on the box? We offer neutral and custom packaging solutions so you can build your own aftermarket brand identity.
• Strict Quality Control: Every WG9718710003 solenoid valve undergoes functional testing, pressure leak testing, and electrical continuity verification before it leaves our facility.
• Complete Product Range: Beyond this solenoid valve, we supply the full spectrum of Sinotruk, Sitrak, HOWO, Shacman, FAW, Weichai, Dongfeng, and Foton truck parts — so you can consolidate your sourcing with one reliable partner.
• Fast & Reliable Delivery: Established logistics channels to Africa, the Middle East, Southeast Asia, Central Asia, and South America ensure your orders arrive on time.
• Flexible Payment Terms: We support T/T, L/C, Western Union, and other secure payment methods to suit your business requirements.
• Factory Visits Welcome: We encourage buyers to visit our facilities and inspect quality firsthand — transparency builds trust.

For a complete overview of all available Sinotruk Sitrak components, visit our Sinotruk Sitrak Truck Parts Full Category Guide.

Frequently Asked Questions (FAQ)

What does the 2-3 way solenoid valve WG9718710003 actually do in the truck?

This solenoid valve acts as an electrically-controlled air switch within the truck’s pneumatic system. When the ECU sends a 24V signal, the solenoid opens or redirects compressed air flow between two or three ports — controlling functions like exhaust braking activation, auxiliary air supply switching, or brake circuit pressure routing. Think of it as the gatekeeper that decides where air pressure goes and when.

How do I know if my WG9718710003 solenoid valve has failed?

Common failure symptoms include: the exhaust brake not engaging, delayed response in pneumatic auxiliary functions, hissing air leaks around the valve body, or diagnostic fault codes pointing to the pneumatic control circuit. If the electrical connector is intact and the wiring checks out, the valve itself is the most likely culprit.

Is this solenoid valve compatible with both Sinotruk HOWO and Sitrak models?

Yes. The WG9718710003 is used across multiple CNHTC-platform vehicles, including Sinotruk HOWO and Sitrak C7H/C5H series trucks. However, always verify the OEM part number against your specific vehicle’s parts catalog to confirm fitment before ordering in bulk.

What is the operating voltage of this solenoid valve?

It operates on the standard 24V DC electrical system used in heavy-duty commercial trucks. The integrated sealed connector plugs directly into the vehicle’s existing wiring harness without any modification.

Can I order this valve with my own brand packaging?

Absolutely. Mettlead offers white-label and custom packaging services. You can supply your own brand artwork, or we can help you design packaging that suits your aftermarket distribution needs. Minimum order quantities apply for custom packaging — reach out for details.

How is quality controlled during production?

Each WG9718710003 solenoid valve undergoes a multi-stage inspection process: dimensional verification, solenoid coil resistance testing, pneumatic pressure leak testing, and functional switching cycle testing. Only valves that pass every checkpoint are approved for shipment.

What’s the typical lead time for bulk orders?

For standard stock items, we typically ship within 3–7 business days. For larger custom-packaged orders, lead time ranges from 10–20 days depending on quantity. We’ll confirm exact timelines when you submit your inquiry.

Ready to Source Your WG9718710003 Solenoid Valve?

You’ve found the right part — now let’s get you the right price. Whether you need 10 pieces or 10,000, our team is ready to provide a competitive quotation with fast delivery to your location.

Here’s what to include in your inquiry for the fastest response:

1. Part number confirmation (WG9718710003)
2. Required quantity
3. Destination country / port
4. Preferred packaging (original, neutral, or custom)
5. Any other Sinotruk / Sitrak parts you need (we’ll bundle the quote)

Contact Us Now to request your quotation — our team typically responds within 12 hours on business days. Let’s get your trucks back on the road.