The Disc brake assembly is a complete front brake system for HOWO 4X2 tractor trucks. This comprehensive kit includes every component needed for a full disc brake overhaul, ensuring reliable and consistent stopping power. The Disc brake assembly is engineered to meet the demanding requirements of heavy-duty commercial vehicles.
The Disc brake assembly integrates precision machined parts, including the Hexagonal head bolt M12 × 1.5, Spring washer, Alarm pressure plate assembly, Alarm bracket, Brake pad assembly, Brake caliper assembly, Front disk brake chamber (22″), and Lubricating grease specially formulated for disc brakes. Each component is selected for optimal performance and durability.
When you choose authentic howo Parts, you receive a Disc brake assembly that meets all OEM specifications. This assembly is designed to provide reliable braking, long pad life, and consistent performance under all operating conditions, ensuring your vehicle stops safely and predictably.
The Disc brake assembly is a direct replacement for worn or damaged units, restoring factory-fresh braking performance. With the Disc brake assembly, you get the reliability that professional drivers depend on for safety and control.
The Hexagonal head bolt M12 × 1.5 is a high-strength fastener used to secure the brake caliper and other critical components of the Disc brake assembly. Its fine pitch thread provides superior clamping force and resistance to loosening under vibration. The hex head design allows for easy tightening with standard tools, ensuring proper torque application.
Manufactured from high-tensile steel, this bolt is heat-treated to achieve the required strength grade. Its precise thread geometry guarantees a perfect fit with the mating threaded holes, ensuring a secure and durable connection. This bolt is essential for maintaining the structural integrity of the Disc brake assembly.
The Spring washer is a split helical locking device that provides preload and prevents loosening of the Hexagonal head bolt M12 × 1.5 under dynamic loads. Its elastic action maintains tension on the fastener, compensating for any settling or thermal expansion that could reduce clamping force.
Made from high-carbon spring steel, the Spring washer retains its resilience over a wide temperature range. Its robust design ensures that the critical connections of the Disc brake assembly remain tight, contributing to braking system safety and reliability.
The Alarm pressure plate assembly is a unique component that provides visual or electrical indication of brake pad wear. As the pads wear, the pressure plate moves closer to the disc, activating a warning signal when replacement is needed. This feature enhances safety by alerting the driver before pad wear becomes critical.
Engineered with precision, the Alarm pressure plate assembly is integrated into the Disc brake assembly without interfering with normal braking function. Its robust construction ensures reliable operation in harsh environments, providing peace of mind to fleet operators.
The Alarm bracket is a sturdy mounting support that secures the Alarm pressure plate assembly to the brake caliper or axle housing. Designed to withstand vibration and impact, this bracket ensures that the alarm mechanism remains accurately positioned throughout the service life of the Disc brake assembly.
Manufactured from corrosion-resistant steel, the Alarm bracket is precision-formed to match the contours of the caliper, providing a secure and stable mounting platform. Its robust design ensures reliable performance even in the most demanding conditions.
The Brake pad assembly consists of friction material bonded to a steel backing plate, designed to provide consistent and effective stopping power. The pad material is specially formulated to offer high friction coefficient, fade resistance, and low wear rate, ensuring reliable braking performance over an extended service life.
The Disc brake assembly includes two Brake pad assemblies – one for each side of the caliper – providing balanced braking force. The pads are pre-scorched and shaped to match the disc contour, ensuring immediate contact and optimal performance from the moment of installation.[reference:0][reference:1]
The Brake caliper assembly is the heart of the Disc brake assembly, housing the pistons, seals, and pad guides. This sturdy aluminum or cast iron housing clamps the brake pads against the disc when hydraulic pressure is applied, generating the friction needed to slow the vehicle. Its rigid design minimizes flex, ensuring efficient force transfer and even pad wear.[reference:2]
The caliper features high-quality seals that prevent fluid leakage and contamination, maintaining consistent brake feel and performance. The integrated guide pins allow smooth movement, ensuring that the pads engage squarely with the disc for maximum braking efficiency. This AZ4007443020 or AZ4007443010 caliper is engineered for durability and safety.[reference:3][reference:4]
The Front disk brake chamber (22″) is the pneumatic actuator that converts compressed air pressure into mechanical force to apply the brake pads. With a 22-inch diaphragm size, this chamber provides high clamping force while maintaining precise modulation. It is designed for quick response and consistent output, essential for safe and controlled deceleration.
The brake chamber is manufactured from corrosion-resistant materials and features a durable diaphragm that withstands thousands of cycles. Its compact design fits seamlessly into the Disc brake assembly, delivering reliable performance in any weather condition.
The Lubricating grease specially formulated for disc brakes is a high-temperature, extreme-pressure lubricant designed for caliper slide pins, pad backing plates, and other metal-to-metal interfaces. It reduces friction, prevents corrosion, and ensures smooth caliper movement, which is essential for even pad wear and consistent braking performance.
This grease is compatible with rubber seals and retains its properties even under extreme heat and moisture. The Disc brake assembly includes the correct quantity for initial assembly, guaranteeing proper lubrication from the start.[reference:5]
Disc brake assembly – Complete Front Brake Kit for HOWO 4X2
| Material Encoding | Name |
|---|---|
| ZQ151C1225TF2 | Hexagonal head bolt M12 × 1.5 |
| Q40312 | Spring washer |
| AZ400744403054 | Alarm pressure plate assembly |
| AZ9100443137 | Alarm bracket |
| WG9100443050 | Brake pad assembly |
| AZ4007443020 | Brake caliper assembly |
| WG9100364022 | Front disk brake chamber (22″) |
| AZ900738440001 | Lubricating grease (special for disc brakes) |
The Disc brake assembly provides everything you need for a full front brake overhaul. From fasteners and washers to the caliper, pads, chamber, and grease, every part is included – saving you time and eliminating compatibility issues.
All components of the Disc brake assembly are manufactured to original equipment specifications, ensuring perfect fit and consistent performance. The brake pads, caliper, and chamber are rigorously tested for durability and stopping power.[reference:6]
The Disc brake assembly comes with pre-measured grease and all necessary bolts and washers. The included alarm bracket and pressure plate simplify mounting, reducing installation time and minimizing the risk of errors.[reference:7]
This Disc brake assembly fits all HOWO 4X2 models and is available through our worldwide distribution network. Expert technical support is always available to assist with installation or any questions.
The Disc brake assembly is the result of extensive engineering and testing to ensure reliable braking performance in the most demanding trucking applications. The caliper is designed for high rigidity, minimizing deflection under pressure to ensure even pad contact and consistent friction. The brake pads are formulated with advanced friction compounds that provide stable stopping power across a wide temperature range, from cold starts to extreme heat generated during heavy braking.
The Front disk brake chamber (22″) features a robust diaphragm and return spring that deliver quick response and reliable release. Its compact envelope allows easy integration into the wheel end, while the durable construction resists corrosion and fatigue. The Alarm pressure plate assembly and bracket work together to provide an early warning of pad wear, helping to prevent damage to the disc and caliper.[reference:8]
Special attention has been given to the lubricating grease, which is formulated to withstand high temperatures and prevent sticking of the caliper slide pins. This ensures that the caliper moves freely, reducing drag and extending pad life. Every component is selected for synergy, resulting in a Disc brake assembly that delivers smooth, quiet, and fade-resistant braking.
Each Disc brake assembly undergoes stringent quality inspections. The caliper is pressure-tested for leaks, the brake chamber is cycled to verify consistent output, and the brake pads are checked for thickness and friction material integrity. Fasteners are tested for hardness and torque retention.
We also perform dynamic braking tests on sample assemblies to measure stopping distance, pedal feel, and noise levels. These tests simulate real-world conditions, including emergency stops and repeated high-energy braking, ensuring that the Disc brake assembly meets the highest safety standards.
With years of experience in brake system manufacturing, we have refined our processes to eliminate common issues such as pad glazing, caliper sticking, and chamber leakage. The result is a Disc brake assembly that consistently delivers reliable stopping power, giving fleet operators confidence in their vehicle’s safety.[reference:9]
Investing in a genuine Disc brake assembly reduces long-term maintenance costs. By replacing all wear components simultaneously, you avoid the labor and downtime of individual part replacements. The high-quality pads and lubricant extend service intervals, reducing the frequency of brake jobs.
For fleet managers, the Disc brake assembly simplifies parts ordering and inventory management. One kit covers all front brake needs, eliminating the need to stock separate calipers, pads, chambers, and hardware. The included alarm system helps prevent costly disc damage caused by over-worn pads.
Improved braking performance also contributes to driver confidence and shorter stopping distances, enhancing overall safety. Reduced brake fade and consistent pedal feel make the vehicle easier to control, especially during long descents or in heavy traffic. These benefits make the Disc brake assembly a sound investment for any fleet operation.
The Disc brake assembly is designed as a direct bolt-on replacement for the original equipment. All mounting holes and interfaces match the HOWO 4X2 axle and steering knuckle, requiring no modifications or special tools. The included hardware – Hexagonal head bolt M12 × 1.5 and Spring washer – are pre-sized for the application.
The caliper is pre-assembled with the brake pads and alarm components, reducing the complexity of installation. The brake chamber is pre-torqued and ready to connect to the air lines. The lubricating grease is supplied in a convenient packet, ensuring the correct amount is applied to slide pins and pad ears.[reference:10]
For technicians, the Disc brake assembly offers a straightforward, time-saving replacement process. Clear instructions and intuitive design minimize the chance of installation errors, and the pre-lubricated components eliminate the need for messy grease applications. This results in faster turnaround times and improved workshop productivity.
Each Disc brake assembly comes with a comprehensive installation guide that includes step-by-step instructions, torque values for all fasteners, and bleeding procedures if applicable. This documentation helps ensure that the brake system is installed correctly and safely.
Our technical support team is available to assist with any questions regarding the Disc brake assembly, from compatibility checks to troubleshooting brake performance issues. We also offer online resources, including video tutorials and frequently asked questions, to help workshops achieve optimal results.
With the Disc brake assembly, you benefit from a complete support system that ensures your vehicle’s braking system remains reliable, safe, and effective for years to come.
The Disc brake assembly is the ultimate solution for maintaining or upgrading the front braking system of your HOWO 4X2 tractor. With its comprehensive kit of genuine components, including the caliper, pads, chamber, alarm system, and lubricant, this assembly ensures reliable stopping power, extended pad life, and enhanced safety. Choose the Disc brake assembly for your fleet and experience the difference that genuine HOWO quality delivers.
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