Product Introduction

This Rear Wheel Brake Caliper, L AZ4007444210 is a heavy-duty OEM left rear brake caliper for heavy-duty trucks and commercial vehicles. It features a robust cast iron housing, precision-machined piston bores, and integrated spring return mechanisms, engineered to deliver reliable, consistent braking force in heavy-load operations.

Performance

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

• Precision Machining: The precision-ground piston bores ensure smooth, uniform clamping force, eliminating uneven wear and maintaining consistent braking performance.

• Integrated Spring Return: Built-in return springs ensure prompt retraction of brake pads, reducing drag and extending service life in harsh undercarriage environments, making it a reliable replacement left rear brake caliper.

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

Core Function

1. Converts hydraulic pressure into clamping force to engage rear brake discs, a critical part of heavy duty truck brake parts.

2. Ensures uniform force distribution across brake pads, preventing uneven wear and maintaining consistent braking performance under heavy loads and long downhill runs.

3. Resists thermal fatigue and deformation, ensuring reliable operation over millions of braking cycles.

4. Fully OEM-compatible for seamless replacement, restoring the clamping function of the left rear brake system.

Rear Wheel Brake Caliper, L AZ4007444210 – Sinotruk Sitrak OEM Brake Caliper

When your heavy-duty fleet demands uncompromising braking performance, every component matters. The Rear Wheel Brake Caliper, L AZ4007444210 is a precision-engineered OEM left rear brake caliper designed specifically for Sinotruk Sitrak heavy-duty trucks. Built with a robust cast iron housing and precision-machined piston bores, this caliper delivers the consistent, reliable braking force that keeps your vehicles safe under maximum payload conditions. Moreover, with Mettlead’s factory-direct pricing and strict quality control, you get OEM-grade performance without the premium markup.

Key Features and Benefits of the AZ4007444210 Rear Wheel Brake Caliper

This isn’t just another replacement part — it’s a performance-critical braking component that your trucks depend on every single day. Here’s why procurement managers across the globe trust this caliper for their fleet maintenance programs:

• Heavy-Duty Cast Iron Housing: Engineered to withstand extreme thermal stress and mechanical loads, ensuring long service life even in the most demanding operating environments.
• Precision-Machined Piston Bores: Tight tolerances guarantee smooth piston travel and uniform pad contact, which translates directly into consistent braking force distribution.
• Integrated Spring Return Mechanisms: Built-in return springs ensure rapid pad retraction, reducing drag, minimizing wear, and improving overall fuel efficiency.
• OEM-Exact Fitment: Manufactured to original Sinotruk specifications, so installation is straightforward with no modifications required — saving your workshop valuable time.
• Corrosion-Resistant Surface Treatment: Protective coating extends component lifespan, particularly in humid, coastal, or salt-exposed operating regions.
• Strict Quality Control: Every unit undergoes rigorous dimensional inspection and pressure testing before shipment, ensuring zero-defect delivery to your warehouse.

In other words, this caliper is built to perform reliably from day one, reducing your fleet’s unplanned downtime and lowering total cost of ownership over the long run.

Technical Specifications – AZ4007444210 Sinotruk Sitrak Rear Brake Caliper

Application Scenarios – Where This Brake Caliper Fits

The Rear Wheel Brake Caliper AZ4007444210 is specifically designed for the following applications. Whether you’re assembling new vehicles or sourcing replacement parts for fleet maintenance, this caliper integrates seamlessly into your braking system:

• Compatible Truck Models: Sinotruk HOWO, Sitrak C7H, Sitrak T7H, and related heavy-duty chassis platforms.
• Trailer Brake Valve Systems: Works in conjunction with trailer braking valves for coordinated stopping power across multi-axle configurations.
• Pneumatic Braking Systems: Fully compatible with air-brake circuit components commonly used in Chinese heavy-duty truck platforms.
• Assembly & Repair: Ideal for both original vehicle assembly lines and aftermarket maintenance workshops performing brake system overhauls.

For a complete range of Sitrak braking components and related parts, explore our Sitrak Heavy-Duty Parts catalog or browse our full Braking System parts category.

OEM/ODM Capability – Tailored to Your Business Needs

At Mettlead, we understand that different markets have different requirements. That’s precisely why we offer flexible OEM and ODM services to help you build your brand while maintaining top-tier product quality:

• White-Label Packaging: Receive products in neutral packaging, ready for your own branding and distribution channels.
• Custom Packaging: We can produce branded boxes, labels, and documentation that align with your company’s visual identity.
• Factory-Direct Supply: By eliminating middlemen, we pass significant cost savings directly to you — giving your business a competitive edge in pricing.
• Flexible Order Quantities: Whether you need a trial order or container-load volumes, our production capacity adapts to your procurement schedule.
• Factory Visits Welcome: We invite you to inspect our facilities, audit our quality processes, and build a long-term partnership based on transparency and trust.

Additionally, you can explore our Sinotruk Sitrak Truck Parts Full Category Guide to discover the complete range of components we supply.

Frequently Asked Questions – AZ4007444210 Rear Wheel Brake Caliper

1. Is this brake caliper an original OEM part or an aftermarket replacement?

This caliper is manufactured to OEM specifications, meaning it matches the exact dimensions, material composition, and performance standards of the original Sinotruk part. It functions as a direct replacement without any fitment modifications.

2. What trucks does the AZ4007444210 Rear Wheel Brake Caliper fit?

It is designed primarily for Sinotruk Sitrak series trucks, including the C7H and T7H models. However, since Sinotruk shares platform components across several lines, it may also fit select HOWO models. We recommend confirming your chassis number with our team before ordering.

3. How does the integrated spring return mechanism benefit braking performance?

The built-in spring return ensures that brake pads retract promptly after each braking event. This prevents residual drag on the disc, which in turn reduces premature pad wear, lowers operating temperatures, and contributes to better fuel economy over time.

4. What quality inspections does this caliper undergo before shipping?

Each unit passes through dimensional verification, piston bore tolerance checks, surface finish inspection, and hydraulic pressure testing. Only calipers that meet all OEM-grade criteria are approved for packaging and dispatch.

5. Can I order a matching right-side caliper as well?

Absolutely. Mettlead supplies both left and right rear wheel brake calipers for Sinotruk Sitrak trucks. Contact our team to get paired pricing and ensure your fleet receives complete axle sets.

6. What is the expected service life of this brake caliper?

Under normal operating conditions and with proper maintenance — including regular brake fluid changes and pad inspections — this caliper is engineered to match or exceed the service life of the original factory-installed unit.

Ready to Secure Your Supply? Get a Quote Today

Stop overpaying for brake components through multiple intermediaries. With Mettlead, you connect directly to the factory floor — gaining access to competitive pricing, reliable lead times, and a dedicated support team that understands heavy-duty truck parts inside and out.

Take the next step:
Contact us now to request pricing, confirm fitment for your specific truck models, or discuss custom packaging options for the Rear Wheel Brake Caliper, L AZ4007444210 Sinotruk Sitrak. Our team typically responds within 24 hours with a detailed quotation tailored to your order volume.