Product Introduction

This Brake Chamber, L=390mm WG9000360609 is an OEM heavy-duty brake chamber for heavy-duty trucks and commercial vehicles. It features a sturdy steel housing, 390mm stroke length, and reliable diaphragm structure, designed to provide stable and powerful braking actuation under heavy-load and long-distance working conditions.

Performance

• Standard 390mm stroke: Strictly matches OEM dimensions, ensuring consistent braking force and smooth linkage with the brake mechanism.

• Highstrength housing: Made of durable steel with good pressure resistance, vibration resistance and deformation resistance.

• Highperformance diaphragm: Uses reinforced rubber material with excellent air tightness, fatigue resistance and long service life.

• Precise connection interface: Standard port design ensures stable installation and no air leakage.

• Direct OEM replacement: Fully compatible with original mounting position and size for easy installation.

Core Function

1. Converts compressed air pressure into mechanical push force to drive the brake system for braking action.

2. Provides stable and sufficient output force to ensure safe and reliable braking under heavy load.

3. Works with brake adjuster and camshaft to achieve sensitive and stable brake response.

4. Suitable for heavy truck pneumatic brake systems, ensuring driving safety on long downhill and complex road conditions.

Brake Chamber L=390mm WG9000360609 – OEM Sinotruk Heavy-Duty Brake Actuation

When your heavy-duty fleet demands uncompromising braking power, every component matters. The Brake Chamber L=390mm WG9000360609 is engineered specifically for Sinotruk HOWO heavy trucks, delivering consistent and powerful brake actuation even under extreme payloads and grueling long-haul conditions. Built with a robust steel housing and a precision-calibrated diaphragm, this OEM-grade brake chamber ensures your vehicles stop safely — every single time.

At Mettlead, we supply this genuine Sinotruk brake chamber directly from our factory in China, which means you get authentic OEM quality at a competitive wholesale price. Whether you’re managing a fleet overhaul or stocking your parts warehouse, this component is ready to ship globally with fast, reliable logistics.

Key Features and Benefits of Brake Chamber WG9000360609

This isn’t just another brake chamber — it’s a critical safety component designed to perform flawlessly under the toughest working conditions. Here’s what sets it apart:

• OEM-Spec 390mm Stroke Length: Provides the full actuation travel required for heavy-duty Sinotruk braking systems, ensuring complete and even pad engagement.
• Heavy-Gauge Steel Housing: Resists corrosion, impact damage, and thermal stress, extending service life in harsh operating environments.
• High-Durability Diaphragm Structure: Engineered from reinforced rubber compounds to withstand millions of braking cycles without fatigue or air leakage.
• Stable Braking Force Output: Maintains consistent pneumatic-to-mechanical force conversion, which translates to predictable stopping distances under full load.
• Direct OEM Replacement: Drops into existing Sinotruk HOWO brake assemblies without modification, saving your technicians valuable installation time.
• Factory-Direct Pricing: By sourcing directly from Mettlead, you eliminate middlemen and reduce your per-unit procurement cost significantly.

In other words, this brake chamber delivers the trifecta that procurement managers care about most: reliability, compatibility, and cost-efficiency.

Technical Specifications

Below you’ll find the detailed parameters for this brake chamber. These specs are verified against OEM standards to ensure precise fitment and performance:

Application Scenarios

Understanding exactly where and how this brake chamber fits into your operations helps you make a confident purchasing decision. Here are the primary use cases:

• Compatible Truck Models: Designed for Sinotruk HOWO heavy-duty truck series, including tractor heads, dump trucks, and cargo vehicles equipped with pneumatic braking systems.
• Brake System Component: Functions as the core actuator within the air brake assembly, converting compressed air pressure into mechanical force on the brake shoes or pads.
• New Vehicle Assembly: Suitable for OEM assembly lines producing Sinotruk HOWO trucks or building custom heavy-vehicle configurations.
• Fault Replacement & Maintenance: Ideal for replacing worn, leaking, or damaged brake chambers during scheduled maintenance or emergency roadside repairs.
• Fleet Overhaul Programs: Perfect for bulk procurement when refreshing braking systems across an entire fleet to maintain safety compliance.

For more Sinotruk braking system components, browse our complete Braking System Parts catalog.

OEM/ODM Capabilities

Mettlead goes beyond simply supplying parts — we partner with distributors and fleet operators to deliver tailored solutions:

• White-Label Packaging: We offer neutral or custom-branded packaging, so you can resell under your own brand identity without any trace of third-party sourcing.
• Custom Packaging Design: Need specific box dimensions, labeling languages, or barcode formats? Our packaging team accommodates your market requirements.
• Strict Quality Control: Every brake chamber undergoes pressure testing, dimensional inspection, and diaphragm integrity checks before leaving our facility.
• Flexible Order Quantities: Whether you need 50 units for a trial order or 5,000 for annual supply, we scale production to match your demand.
• Factory Visits Welcome: We invite procurement teams to visit our production facility in China to audit quality processes firsthand.

Explore our full range of Sinotruk HOWO Truck Parts or view all available products on our Sinotruk Parts page.

Frequently Asked Questions

What is the exact function of Brake Chamber WG9000360609?

This brake chamber converts pneumatic air pressure into mechanical pushing force. When you apply the brakes, compressed air enters the chamber, pushes against the diaphragm, and extends the pushrod to engage the brake shoes against the drum. The 390mm stroke length ensures full and even contact for maximum stopping power.

How do I know if this brake chamber fits my truck?

This part is designed specifically for Sinotruk HOWO heavy-duty trucks that use OEM part number WG9000360609. To confirm compatibility, simply match this part number against your vehicle’s original parts catalog or the number stamped on your existing brake chamber.

What are common signs that a brake chamber needs replacement?

Watch for these warning indicators: audible air leaks around the chamber body, sluggish or uneven braking response, visible cracks or rust-through on the steel housing, or a pushrod that fails to retract fully when brakes are released. Any of these symptoms suggest the diaphragm or housing has degraded beyond safe operation.

Is this brake chamber identical to the original Sinotruk factory part?

Yes. This brake chamber is manufactured to OEM specifications, meaning it matches the original part in dimensions, materials, stroke length, and performance characteristics. It installs as a direct drop-in replacement with no modifications needed.

Can I order this brake chamber with my own brand label?

Absolutely. Mettlead offers white-label and custom packaging services. You can supply your brand artwork, and we’ll package each unit accordingly — ideal for distributors building their own aftermarket parts brand.

What quality testing does this brake chamber undergo?

Each unit passes through air-tightness pressure testing, pushrod stroke measurement, diaphragm elasticity verification, and housing dimensional inspection. Only chambers that meet all OEM tolerance thresholds are approved for shipment.

Get Your Competitive Quote Today

Ready to secure factory-direct pricing on the Brake Chamber L=390mm WG9000360609 Sinotruk? Our team responds to inquiries within 24 hours with detailed pricing, lead times, and shipping options tailored to your destination.

Simply tell us your required quantity and delivery location, and we’ll prepare a no-obligation quotation. Bulk discounts are available for volume orders.

Contact Us Now to Request a Quote →

Mettlead — Your trusted factory-direct source for Sinotruk, HOWO, SHACMAN, FAW, Weichai, Dongfeng, and Foton truck parts. Reliable quality, competitive pricing, global delivery.