Product Introduction

This air dryer assembly WG9000360571 is a heavy-duty OEM air dryer for heavy duty trucks, designed to purify and regulate compressed air in commercial vehicle pneumatic brake systems. It features a robust cast aluminum housing, a high-capacity desiccant canister, and integrated control valves, built to remove moisture, oil, and contaminants from compressed air in heavy-load operations.

Performance

• Efficient Moisture Removal: This heavy duty air dryer assemblyuses a high-capacity desiccant canister, effectively removing moisture, oil, and contaminants from compressed air, preventing corrosion and freeze-ups in pneumatic systems as a high performance air dryer assembly.

• Integrated Control Valves: The integrated multi-function valve block simplifies installation and maintenance, ensuring reliable system pressure regulation and air drying.

• Durable Construction: The cast aluminum housing and corrosion-resistant internal components resist impact, vibration, and temperature fluctuations, extending service life in harsh undercarriage environments and making it a reliable replacement air dryer assembly.

• Wide Compatibility: Designed to fit most heavy-duty truck pneumatic systems, it is ideal as an air dryer assembly for commercial vehicles.

Core Function

1. Removes moisture, oil, and contaminants from compressed air, preventing corrosion and freeze-ups in pneumatic brake systems—a critical part of heavy duty truck brake parts.

2. Regulates system pressure, ensuring consistent performance under heavy loads and long downhill runs.

3. Simplifies system design with integrated valves, reducing maintenance requirements and improving fleet uptime.

Air Dryer Assy WG9000360571 – OEM Sinotruk Air Dryer Assembly for Heavy-Duty Truck Brake Systems

When your fleet’s braking performance depends on clean, dry compressed air, you need an air dryer assembly that simply refuses to let moisture through. The Air Dryer Assy WG9000360571 is an OEM-grade Sinotruk air dryer assembly purpose-built to protect pneumatic brake systems in heavy-duty commercial vehicles. Engineered with a robust cast aluminum housing, a high-capacity desiccant canister, and fully integrated control valves, this unit efficiently removes moisture, oil vapor, and solid contaminants from compressed air—even under the most demanding heavy-load operations. Whether you are stocking replacement parts or maintaining an entire fleet, this air dryer assembly delivers the reliability your trucks depend on every single day.

At Mettlead, we supply this genuine-spec air dryer directly from our China-based facility, which means you get authentic OEM quality at a factory-direct price—without the markup of middlemen. As a result, procurement managers worldwide trust us to keep their supply chains running smoothly.

Key Features and Benefits of Air Dryer Assy WG9000360571 Sinotruk

This Sinotruk air dryer assembly is far more than a simple filter—it is the core guardian of your truck’s entire pneumatic braking circuit. Here is what sets it apart:

• Heavy-Duty Cast Aluminum Housing: Resists corrosion and withstands harsh road vibrations, ensuring long-term structural integrity even in extreme environments.
• High-Capacity Desiccant Canister: Absorbs substantial volumes of moisture per cycle, extending service intervals and reducing maintenance downtime for your fleet.
• Integrated Control Valves: Combines pressure regulation and purge functions in one compact assembly, simplifying installation and minimizing potential leak points.
• Comprehensive Contaminant Removal: Effectively filters out water vapor, oil mist, and particulate matter—protecting downstream valves, chambers, and ABS components from premature wear.
• OEM-Spec Compatibility: Manufactured to match original Sinotruk specifications (part number WG9000360571), so it fits perfectly without modifications.
• Extended Brake System Lifespan: By delivering consistently clean, dry air, this dryer prevents internal corrosion of brake lines and valves, ultimately lowering your total cost of ownership.

In other words, when you install this air dryer assembly, you are investing directly in safer braking, fewer roadside breakdowns, and lower long-term maintenance costs. That is a return on investment any procurement manager can appreciate.

Application Scenarios – Compatible Vehicle Models

The Air Dryer Assy WG9000360571 is specifically designed as a direct-fit replacement for the following Sinotruk heavy-duty platforms:

• Sinotruk HOWO Series – A7, HOWO 371, HOWO 375, HOWO 380 tractor heads and dump trucks
• Sinotruk SITRAK Series – C7H, T7H long-haul tractors and heavy-duty logistics vehicles
• Sinotruk Steyr Series – King and Steyr-platform heavy haulers

This air dryer assembly serves as a core component of the pneumatic brake air circuit, and it is most commonly needed in the following situations:

1. Scheduled Maintenance Replacement: Swap out aging dryers before desiccant degradation compromises air quality.
2. Fault-Triggered Repair: Replace units that show signs of moisture breakthrough, excessive purge cycling, or cracked housings.
3. Fleet Overhaul Programs: Standardize your spare parts inventory with factory-spec components for efficient bulk replacement.

Looking for more braking system components? Browse our complete Braking System Parts catalog or explore the full SITRAK Heavy-Duty Parts collection for related items.

Technical Specifications – Air Dryer Assy WG9000360571

Below you will find the detailed technical parameters for this Sinotruk air dryer assembly. We provide these specifications so you can verify exact fitment and performance requirements before placing your order:

If you need to cross-reference this part number with your existing inventory system, do not hesitate to contact our technical team for confirmation.

OEM/ODM Capability and Custom Packaging Options

We understand that different markets and distribution channels have unique requirements. That is precisely why Mettlead offers flexible OEM and ODM services tailored to your business needs:

• White-Label Packaging: Receive the Air Dryer Assy WG9000360571 in neutral boxes—perfect for distributors who sell under their own brand identity.
• Custom Branding: Add your company logo, part numbers, and market-specific labeling to both the product and outer carton.
• Strict Quality Control: Every unit undergoes rigorous inspection and pressure testing before shipment, ensuring zero-defect delivery rates.
• Bulk Order Flexibility: Whether you need 10 pieces for a single workshop or 1,000 units for regional distribution, we scale production to match your demand.
• Technical Documentation Support: We can provide installation guides and spec sheets co-branded with your company details upon request.

Furthermore, our factory-direct model eliminates unnecessary intermediaries, which translates into more competitive pricing and shorter lead times for your procurement cycle. Most standard orders ship within 3–7 business days from confirmation.

For a comprehensive view of all available Sinotruk and SITRAK components, visit our Sinotruk SITRAK Truck Parts Full Category Guide.

Frequently Asked Questions – Air Dryer Assy WG9000360571 Sinotruk

What does the Air Dryer Assy WG9000360571 actually do in the braking system?

Simply put, this air dryer assembly acts as the last line of defense between your compressor and your brake valves. It captures moisture, oil droplets, and fine particles from compressed air before they can reach sensitive downstream components. Without a properly functioning air dryer, water accumulates in brake lines—leading to corrosion, frozen valves in cold climates, and ultimately compromised braking performance.

How do I know when the Air Dryer Assy WG9000360571 needs replacement?

Several telltale signs indicate your air dryer is due for a swap. Watch for excessive water draining from air tanks, unusually frequent compressor cycling, audible air leaks near the dryer unit, or visible cracks and corrosion on the housing. Additionally, if your desiccant cartridge has exceeded its recommended service life (typically every 1–2 years or per OEM maintenance schedule), proactive replacement prevents costly brake system failures.

Is this Air Dryer Assy WG9000360571 an exact OEM replacement?

Yes. This unit is manufactured to match the original Sinotruk part number WG9000360571 in terms of dimensions, thread specifications, pressure ratings, and desiccant capacity. It installs as a direct bolt-on replacement with no modifications required—so your technicians can complete the swap quickly and get your trucks back on the road.

Can I use this Sinotruk air dryer assembly in extremely cold climates?

Absolutely. The Air Dryer Assy WG9000360571 is rated for operating temperatures from -40°C to +80°C. Its integrated heater element (where applicable to the vehicle’s wiring harness) helps prevent desiccant freezing during winter operations, ensuring consistent moisture removal even in harsh northern environments.

What is the difference between this air dryer assembly and a standalone desiccant cartridge?

A standalone desiccant cartridge is just one component—the replaceable filter element. In contrast, the Air Dryer Assy WG9000360571 is a complete assembly that includes the aluminum housing, desiccant canister, purge valve, check valve, and all integrated control components. If your existing housing is damaged, corroded, or has a cracked body, you need the full assembly rather than just a cartridge swap.

Does this air dryer assembly fit other Chinese truck brands besides Sinotruk?

The WG9000360571 is specifically designed for Sinotruk platforms (HOWO, SITRAK, Steyr). However, some Chinese truck brands share similar pneumatic system architectures. If you are looking for air dryers compatible with SHACMAN, FAW, Dongfeng, or Foton trucks, we carry those as well—just reach out to our parts specialists with your specific vehicle model and we will match the correct part number for you.

Ready to Secure Your Supply? Request a Quote Today

As a procurement manager, you know that reliable parts availability and competitive pricing are what keep your operations profitable. The Air Dryer Assy WG9000360571 Sinotruk is in stock and ready for immediate dispatch from our China facility.

Here is what you get when you work with Mettlead:

• ✅ Factory-direct pricing with no middleman markups
• ✅ Fast, reliable global shipping (most orders dispatched within 3–7 days)
• ✅ Flexible payment methods with secure transaction processing
• ✅ White-label and custom packaging available for resellers
• ✅ Dedicated support team ready to assist with technical queries
• ✅ Factory visits welcome for long-term partnership verification

Take the next step.
Contact us now to get your personalized quotation, confirm lead times, or request a sample of the Air Dryer Assy WG9000360571. Our team typically responds within 24 hours—because we know in this business, time is money.

Browse more Sinotruk brake components in our Braking System Parts category, or explore the full Sinotruk SITRAK Parts Category Guide to consolidate your order and maximize shipping efficiency.