Product Introduction

This brake disc 812W50803-0041 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 812W50803-0041 for Sinotruk Sitrak – Heavy-Duty OEM Replacement

When your fleet depends on consistent, fade-free stopping power under extreme loads, every component in the braking system matters. The Brake Disc 812W50803-0041 is purpose-engineered for Sinotruk Sitrak heavy-duty trucks, delivering the kind of reliable braking performance that keeps drivers safe and operations on schedule. Manufactured to OEM specifications and supplied factory-direct by Mettlead, this brake disc combines precision machining, robust materials, and competitive pricing — so you never have to choose between quality and cost efficiency.

Key Features and Benefits of Brake Disc 812W50803-0041

This isn’t just another aftermarket disc — it’s a direct OEM-equivalent replacement built to handle the punishing demands of commercial transport. Here’s what sets it apart:

• Premium Cast Iron Construction: High-carbon grey cast iron delivers exceptional thermal stability and wear resistance, ensuring the disc maintains its integrity even during prolonged heavy braking.
• Precision-Machined Friction Surface: CNC-machined to tight tolerances, the friction surface promotes even pad contact, reduces vibration, and extends both disc and pad service life.
• Integrated Ventilation Channels: Internal venting accelerates heat dissipation, significantly reducing the risk of brake fade during long descents or repeated stop-and-go cycles under full load.
• OEM-Matched Dimensions: Engineered to fit Sinotruk Sitrak disc brake assemblies without modification, ensuring hassle-free installation and immediate return to service.
• Strict Quality Control: Every disc undergoes dimensional inspection, balance testing, and surface finish verification before shipment — because downtime is never acceptable.
• Factory-Direct Pricing: By sourcing directly from Mettlead, you eliminate middlemen and secure the best possible cost per unit without sacrificing quality.

In other words, this brake disc is designed to work harder, last longer, and cost less — a combination that procurement managers genuinely appreciate.

Technical Specifications

Accurate specifications matter when you’re matching parts to your fleet. The table below outlines the key parameters for Brake Disc 812W50803-0041:

Need exact dimensional data (outer diameter, thickness, bolt hole pattern) for cross-referencing? Our technical team can provide detailed drawings upon request.

Application Scenarios

Understanding exactly where and when this brake disc fits into your maintenance workflow helps you plan smarter. The Brake Disc 812W50803-0041 is specifically designed for the following applications:

• Compatible Vehicles: Sinotruk Sitrak series heavy-duty trucks (C7H, C5H, and related models equipped with disc brake systems).
• System: Front and rear disc brake assemblies within the Sitrak pneumatic-hydraulic braking system.
• Replacement Scenarios: Routine replacement when disc thickness reaches minimum specification; replacement after surface scoring, cracking, or heat damage; upgrade from worn discs during scheduled fleet maintenance; emergency replacement following brake system inspection failures.

Whether you’re managing a long-haul logistics fleet or maintaining a regional distribution operation, keeping quality brake discs in stock minimizes unplanned downtime and keeps your trucks compliant with safety standards.

Explore our full range of braking system components or browse all available Sitrak heavy-duty truck parts for additional replacement needs.

OEM and ODM Capabilities

Mettlead understands that different markets have different requirements. That’s why we offer flexible manufacturing and packaging solutions tailored to your business:

• White-Label Packaging: Receive brake discs in neutral packaging, ready for your own branding — ideal for distributors and resellers building their own parts brand.
• Custom Packaging: We can produce packaging with your logo, part numbers, and branding guidelines, giving your customers a professional unboxing experience.
• Bulk and Mixed Orders: Whether you need a container of brake discs or a mixed shipment combining discs with other Sinotruk Sitrak truck parts, we accommodate flexible order configurations.
• Quality Assurance Documentation: Each shipment can include inspection reports, material certificates, and dimensional verification records as needed.

In short, we adapt to your supply chain — not the other way around.

Frequently Asked Questions About Brake Disc 812W50803-0041

Is this brake disc an original OEM part or an aftermarket replacement?

This is an OEM-equivalent aftermarket brake disc manufactured to match the original 812W50803-0041 specifications exactly. It uses the same grade of cast iron, the same dimensional tolerances, and the same ventilation design as the factory-installed disc, ensuring seamless compatibility with your Sitrak braking system.

How do I know when this brake disc needs replacement?

You should replace the brake disc when it reaches its minimum thickness specification (typically stamped on the disc), or when you observe visible scoring deeper than 0.5mm, surface cracks, excessive runout causing pedal vibration, or uneven wear patterns. Regular inspection during scheduled maintenance helps catch these issues early.

Will this brake disc fit both front and rear axle positions?

Part number 812W50803-0041 is position-specific. Please confirm your vehicle’s axle configuration and existing disc part number before ordering. Our team can help you verify fitment if you provide your truck’s VIN or chassis number.

What causes premature brake disc wear on heavy-duty trucks?

Several factors accelerate disc wear: overloading beyond rated capacity, aggressive braking habits, contaminated or worn brake pads, seized caliper slide pins, and insufficient cooling due to blocked ventilation channels. Using a quality OEM-spec disc like the 812W50803-0041 helps, but addressing these root causes extends service life significantly.

Can I order a sample before committing to a bulk purchase?

Absolutely. Mettlead welcomes sample orders so you can inspect material quality, machining precision, and fitment before scaling up. We also welcome factory visits for buyers who want to see our quality control processes firsthand.

What is the typical lead time for this brake disc?

For stocked items, shipment typically occurs within 3–7 business days. For larger custom orders or white-label packaging, lead times range from 15–30 days depending on quantity. We’ll confirm exact timelines when you submit your inquiry.

Get a Competitive Quote for Brake Disc 812W50803-0041

Ready to secure reliable, factory-direct pricing on OEM-quality brake discs for your Sinotruk Sitrak fleet? Mettlead makes the process straightforward:

1. Submit your inquiry with the part number, required quantity, and destination country.
2. Receive a detailed quotation including unit pricing, packaging options, and estimated delivery timeline.
3. Confirm and ship — we handle export documentation, secure packaging, and reliable logistics to your door.

Whether you need 10 pieces or 10,000, our team is ready to support your procurement goals with fast response times and flexible payment terms.

Contact us now
to request pricing, technical drawings, or a sample of Brake Disc 812W50803-0041. Let’s keep your fleet stopping safely — and your costs under control.