Product Introduction

This Brake Master Valve WG9719360005 is an OEM pneumatic brake control valve for heavy-duty trucks and commercial vehicles. It is precision-engineered from high-grade cast aluminum, designed to deliver reliable, proportional brake actuation under heavy-load and long-haul operations.

Performance

• Proportional Control: This heavy-duty brake master valve provides precise, proportional control of brake pressure, ensuring smooth, responsive braking that matches the driver’s input—a high performance brake control valve.

• Robust Cast Aluminum Construction: Manufactured from premium cast aluminum, the valve offers exceptional strength, corrosion resistance, and durability, resisting vibration and impact in harsh undercarriage environments.

• Precision Sealing: High-quality rubber seals and precision-machined ports prevent air leaks, maintaining consistent system pressure and reliable performance.

• Dual-Circuit Design: The valve integrates primary and secondary brake circuits, ensuring fail-safe operation even if one circuit is compromised.

• OEM Exact Fit: Optimized for Sinotruk heavy-duty truck models, it matches original mounting points and port positions for seamless installation.

Core Function

1. Converts the driver’s mechanical input (brake pedal) into proportional pneumatic pressure, controlling the vehicle’s brake system—a core part of heavy duty truck brake parts.

2. Provides fail-safe operation, ensuring braking performance even if one brake circuit fails.

3. Maintains consistent brake pressure, ensuring responsive and reliable braking under heavy loads and long downhill runs.

4. Fully OEM-compatible for direct replacement, restoring the proportional control and safety function of the brake system.

Brake Master Valve WG9719360005 Sinotruk – OEM Pneumatic Brake Control Valve for Heavy-Duty Trucks

When it comes to heavy-duty braking performance, there’s no room for compromise. The Brake Master Valve WG9719360005 Sinotruk is a precision-engineered pneumatic brake control valve built to handle the extreme demands of long-haul trucking and heavy-load operations. Manufactured from high-grade cast aluminum, this OEM-spec component delivers smooth, proportional brake actuation — giving drivers confident stopping power mile after mile. Whether you’re sourcing for fleet maintenance or wholesale distribution, this brake master valve stands as a proven, cost-effective solution backed by Mettlead’s factory-direct supply chain.

Key Features and Benefits of Brake Master Valve WG9719360005

This Sinotruk brake master valve isn’t just another replacement part — it’s engineered to perform identically to the original equipment. Here’s what sets it apart:

• OEM-Grade Precision: Manufactured to exact Sinotruk factory specifications, ensuring seamless fitment and reliable brake response without any modifications.
• High-Grade Cast Aluminum Body: The lightweight yet incredibly durable aluminum housing resists corrosion and withstands high-pressure pneumatic cycles over extended service life.
• Proportional Brake Actuation: Delivers smooth, linear braking force proportional to pedal input — critical for safe control of fully loaded heavy-duty vehicles.
• Built for Extreme Conditions: Engineered to perform consistently in high-temperature, high-vibration, and dusty environments typical of mining, construction, and long-distance haulage.
• Extended Service Life: Internal seals and precision-machined components minimize wear, reducing maintenance frequency and lowering total cost of ownership for fleet operators.
• Direct Drop-In Replacement: Bolt-on installation with no need for custom brackets or adapters — minimizing vehicle downtime during repairs.

For wholesale buyers and distributors, stocking the WG9719360005 brake master valve means offering your customers a dependable, high-margin product that moves quickly in aftermarket channels.

Technical Specifications – Brake Master Valve WG9719360005 Sinotruk

Application Scenarios – Where Does This Brake Master Valve Fit?

The Brake Master Valve WG9719360005 is specifically designed for Sinotruk heavy-duty truck platforms. It serves as the core control component within the vehicle’s pneumatic braking system, translating driver pedal input into precise air pressure distribution across front and rear brake circuits.

Compatible Vehicle Models

• Sinotruk HOWO A7 heavy-duty tractor units
• Sinotruk HOWO 371/375/380 HP series trucks
• Sinotruk SITRAK C7H series
• Other Sinotruk models equipped with WG9719360005 brake system configuration

Typical Use Cases

• Complete Vehicle Assembly: Used in new truck production lines as part of the original braking system installation.
• Fault Replacement: Direct replacement when the existing brake master valve shows signs of air leakage, delayed response, or inconsistent braking pressure.
• Scheduled Maintenance & Overhaul: Proactive replacement during major service intervals to maintain optimal braking safety and compliance.

Explore more heavy truck braking system components or browse our full Sinotruk HOWO truck parts catalog for additional items.

OEM/ODM Capability – White-Label & Custom Packaging

At Mettlead, we understand that distributors and wholesalers need more than just quality parts — you need branding flexibility. That’s exactly why we offer comprehensive OEM and ODM services for the Brake Master Valve WG9719360005 and our entire product range.

• White-Label Packaging: Receive products in neutral packaging, ready for your own branding and labeling — perfect for building your private-label aftermarket brand.
• Custom Packaging Design: We can produce packaging with your company logo, part numbers, barcodes, and multilingual product information to match your market requirements.
• Strict Quality Control: Every brake master valve undergoes rigorous pressure testing, seal integrity checks, and dimensional verification before shipment — ensuring zero-defect delivery to your warehouse.
• Flexible MOQ: Whether you’re testing a new market or placing large container orders, our minimum order quantities are designed to accommodate distributors at every scale.
• Factory-Direct Pricing: By sourcing directly from our manufacturing base in China, you eliminate middlemen and maximize your profit margins on every unit sold.

Visit our complete Sinotruk truck parts collection to discover the full range of components available for wholesale.

Frequently Asked Questions – Brake Master Valve WG9719360005

1. Is this Brake Master Valve WG9719360005 an original Sinotruk part or aftermarket?

This is an OEM-equivalent aftermarket brake master valve manufactured to the exact same specifications as the original Sinotruk part number WG9719360005. It fits, functions, and performs identically to the factory-installed component — but at a significantly lower cost point that benefits wholesale buyers.

2. How can I tell if my truck’s brake master valve needs replacement?

Common signs of a failing brake master valve include audible air leaks near the valve body, spongy or delayed brake pedal response, uneven braking between axles, and the vehicle pulling to one side during braking. If you notice any of these symptoms, the WG9719360005 valve should be inspected and likely replaced to restore safe braking performance.

3. Does this brake valve support dual-circuit braking systems?

Yes, absolutely. The WG9719360005 is a dual-circuit pneumatic brake control valve, meaning it independently controls air pressure to both the front and rear brake circuits. This dual-circuit design is a critical safety feature — if one circuit fails, the other continues to provide braking force.

4. What is the expected service life of this brake master valve?

Under normal operating conditions and with proper air system maintenance (clean, dry compressed air), this brake master valve typically delivers reliable service for 200,000–300,000 km or more. However, service life can vary depending on operating environment, air dryer condition, and maintenance practices.

5. Can I order this brake master valve with my own brand packaging?

Yes, Mettlead offers full white-label and custom packaging services. You can have the Brake Master Valve WG9719360005 shipped in neutral boxes or in packaging featuring your own brand identity — ideal for distributors building a recognized aftermarket parts brand in their region.

6. What quality testing does this valve undergo before shipping?

Each unit passes through a multi-stage quality control process including dimensional accuracy checks, pneumatic pressure testing at rated operating pressure, seal leakage testing, and surface finish inspection. Only valves that meet all OEM tolerance standards are approved for shipment.

Ready to Source Brake Master Valve WG9719360005 at Wholesale Prices?

Stop overpaying for middleman markups. With Mettlead, you get factory-direct pricing, consistent OEM quality, and a reliable supply partner who understands the global truck parts aftermarket. Whether you need 50 units or a full container load, our team is ready to provide competitive quotes tailored to your volume.

Here’s what you can expect when you work with us:

• Competitive wholesale pricing with volume discounts
• Fast, reliable global shipping with full tracking
• Flexible and secure payment options
• Dedicated account support from inquiry to delivery
• Factory visits welcome — come see our operations firsthand

Take the next step today.
Contact us now to request a quote for Brake Master Valve WG9719360005 Sinotruk or any other heavy truck parts you need. Our team typically responds within 24 hours with pricing and availability.