Product Introduction

This brake disc WG4071443003 is a heavy-duty OEM brake disc for heavy duty trucks, engineered for commercial vehicle disc brake systems. It features a robust cast iron construction, precision-machined friction surface, and integrated ventilation channels, built to deliver reliable, consistent braking performance in heavy-load operations.

Performance

• High-Strength Casting: This heavy duty brake discis cast from high-grade gray iron, offering exceptional resistance to thermal cracking, warping, and wear under extreme braking forces as a high performance brake disc.

• Precision Machining: The precision-ground friction surface ensures smooth, uniform contact with brake pads, eliminating uneven wear and maintaining consistent braking performance.

• Efficient Ventilation: Integrated ventilation channels dissipate heat rapidly, preventing brake fade and extending service life in harsh undercarriage environments, making it a reliable replacement brake disc.

• Vehicle Specific Compatibility: Optimized for heavy-duty truck disc brake systems, it is ideal as a brake disc for commercial vehicles.

Core Function

1. Provides a friction surface for brake pads to clamp against, converting kinetic energy into heat to slow or stop the vehicle—a critical part of heavy duty truck brake parts.

2. Efficiently dissipates heat generated during braking, preventing brake fade and maintaining consistent performance under heavy loads and long downhill runs.

3. Resists thermal cracking and warping, ensuring reliable operation over millions of braking cycles.

4. Fully OEM-compatible for seamless replacement, restoring the friction and heat dissipation function of the brake system.

Brake Disc WG4071443003 for Sinotruk Sitrak – OEM Heavy-Duty Replacement

When your Sitrak truck’s braking system demands a dependable replacement, the Brake Disc WG4071443003 delivers exactly what heavy-duty operations require. Engineered to OEM specifications for Sinotruk Sitrak commercial vehicles, this precision-machined brake disc restores full braking confidence under the heaviest loads. Whether you’re managing a fleet or sourcing parts for your workshop, Mettlead supplies this disc brake rotor directly from China’s manufacturing base—giving you factory-direct pricing without compromising on quality.

Key Features and Benefits of Brake Disc WG4071443003

This isn’t just another aftermarket rotor—it’s a purpose-built component that mirrors the original Sitrak brake disc in every critical dimension. Here’s what sets it apart:

• OEM-Grade Cast Iron Construction – High-carbon grey iron delivers exceptional heat absorption and wear resistance, ensuring the disc performs reliably across thousands of braking cycles.
• Precision-Machined Friction Surface – CNC-finished contact areas provide uniform pad contact, which translates into smoother, more predictable stopping power from day one.
• Integrated Ventilation Channels – Internal vane design promotes rapid heat dissipation, significantly reducing brake fade during sustained downhill descents or stop-and-go urban hauling.
• Direct-Fit Replacement – Manufactured to match WG4071443003 dimensional tolerances, so installation is straightforward with no modifications needed.
• Strict Quality Control – Every disc undergoes dimensional inspection, balance testing, and surface finish verification before leaving the production line.
• Extended Service Life – Optimized metallurgy resists thermal cracking and scoring, which means longer intervals between replacements and lower total cost of ownership.

In short, this brake disc keeps your Sitrak trucks stopping safely while keeping your maintenance budget in check.

Technical Specifications

Below you’ll find the key parameters for the Brake Disc WG4071443003 Sinotruk Sitrak. These specs ensure you’re ordering the correct part for your application:

Note: If you need exact outer diameter, thickness, or bolt-hole specifications for cross-referencing, please contact us with your vehicle model details.

Application Scenarios

The Brake Disc WG4071443003 is specifically designed for the following use cases:

• Compatible Vehicles: Sinotruk Sitrak heavy-duty truck series (C7H, C5H, and related models equipped with disc brake axles).
• System Category: Braking system – disc brake assembly component.
• Replacement Scenarios: Worn brake discs that have reached minimum thickness, rotors showing thermal cracks or deep scoring, discs damaged from brake pad failure, or routine scheduled replacement during fleet maintenance intervals.

Looking for more braking components? Browse our full range of braking system parts or explore the complete Sitrak heavy-duty parts catalog for additional items you may need alongside this disc.

OEM and ODM Capabilities

As a procurement manager, you likely need more than just a single part number. Mettlead offers flexible partnership options designed around how B2B buyers actually work:

• White-Label Packaging – Ship brake discs under your own brand identity. We handle production; you build your brand equity in your local market.
• Custom Packaging – Specific box dimensions, labeling languages, or barcoding requirements? We accommodate all of them.
• Broad Parts Coverage – Beyond Sitrak, we supply genuine-equivalent parts for SINOTRUK HOWO, SHACMAN, FAW, WEICHAI, DONGFENG, and FOTON. One supplier, multiple brands—simplified purchasing.
• Factory Visits Welcome – We invite buyers to inspect production facilities firsthand. Transparency builds trust, and we’re confident in what you’ll see.

For a comprehensive overview of every Sitrak component category we cover, visit our Sinotruk Sitrak truck parts full category guide.

Frequently Asked Questions – Brake Disc WG4071443003

What is the material composition of this Sinotruk Sitrak brake disc?

The WG4071443003 brake disc is cast from high-carbon grey iron (typically HT250 grade). This material was chosen specifically because it balances thermal conductivity, damping capacity, and wear resistance—three properties that matter most in heavy-truck braking applications.

How do I know when this brake disc needs replacement?

You should replace the brake disc when it reaches its minimum thickness specification, shows visible thermal cracks on the friction surface, exhibits deep scoring that cannot be resurfaced, or causes excessive vibration during braking. Additionally, if you’re replacing brake pads and the rotor shows uneven wear, it’s wise to fit a new disc at the same time to ensure proper pad bedding.

Does the WG4071443003 brake disc come with ventilation channels?

Yes, absolutely. This is a ventilated disc with internal vane passages between the two friction surfaces. These channels draw air through the rotor as it spins, actively cooling the disc and reducing the risk of brake fade during heavy or repeated braking.

Is this brake disc a direct replacement for the original Sitrak rotor?

It is. The WG4071443003 is manufactured to match OEM dimensional specifications, including diameter, thickness, mounting bolt pattern, and hub bore. No machining or adapter brackets are required—it bolts directly into the existing caliper assembly.

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

Yes. Mettlead supports white-label and custom packaging services. You can supply your brand artwork and packaging specifications, and we’ll deliver finished goods ready for your distribution channel.

What quality checks are performed on each brake disc?

Each rotor undergoes dimensional verification against OEM drawings, dynamic balance testing to prevent vibration, surface roughness measurement for proper pad contact, and visual inspection for casting defects. Only discs that pass all checkpoints are cleared for shipment.

Get Your Quote for Brake Disc WG4071443003 – Fast and Simple

Ready to secure competitive pricing on the WG4071443003 Sinotruk Sitrak brake disc? Whether you need 10 pieces or 10,000, Mettlead is set up to handle your order with factory-direct efficiency. Here’s what you can expect:

• Transparent, competitive unit pricing based on quantity
• Flexible, secure payment methods tailored to international trade
• Fast, reliable delivery with shipment tracking
• Dedicated account support from inquiry through to delivery

Contact us now to request a quotation, confirm lead times, or ask any technical question about this brake disc. Our team typically responds within 24 hours—because in this business, time is money.