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OEM AZ400745401571 The brake floor assembly (right), also known as the brake backing plate, is a critical chassis component that provides the rigid foundation for all drum brake hardware—shoes, springs, and adjusters—ensuring consistent and reliable braking force. The genuine SINOTRUK HOWO AZ400745401571 Brake Floor Assembly (Right) is an OEM‑grade component engineered for a perfect fit and long‑term durability. As a vital element of the trusted Sinotruk howo parts family, this brake floor assembly is crafted from high-strength, anti-corrosion steel and reinforced alloys. It bears heavy loads, resists impacts, and stands up to harsh weather—effectively supporting key braking components to ensure stable performance and extend the truck’s service life.
The AZ400745401571 plate is stamped from heavy-gauge steel, providing exceptional rigidity to maintain precise brake geometry under load.
A durable e-coat and topcoat protect against rust and road salt, ensuring the assembly remains structurally sound for years.
The axle mounting flange is precisely formed to ensure perfect alignment with the axle housing, preventing brake drag and uneven wear.
Anchor pin, camshaft, and adjuster mounting points are reinforced to withstand high actuation forces without distortion.
| Parameter | Specification | Details |
|---|---|---|
| OEM Part Number | AZ400745401571 | SINOTRUK HOWO Original |
| Product Name | Brake Floor Assembly (Right) | Backing plate for drum brake |
| Material | Stamped steel (SAPH440 or equivalent) | High-strength, corrosion-protected |
| Overall Diameter | ~420 mm (application specific) | Fits standard Howo drums |
| Mounting Bolt Circle | ~335 mm (8 holes) | Precision punched |
| Thickness (plate) | 6.0 mm (nominal) | Rigid construction |
| Anchor Pin Hole Diameter | 22.0 mm (reinforced boss) | Hardened insert optional |
| Camshaft Bushing Bore | 38.0 mm (for S-cam) | Accepts standard bushing |
| Weight (approx.) | ~9.5 kg | Robust, durable |
| Surface Finish | E-coated + black paint | Salt spray resistant |
| Compatible Axles | SINOTRUK HOWO front / rear axles (right side) | Verify model |
The brake floor assembly (backing plate) is the foundation upon which the entire drum brake system is built. It must maintain perfect alignment of the shoes, anchor pin, and camshaft under immense and repeated forces. A bent or corroded AZ400745401571 plate can lead to uneven shoe contact, brake pull, reduced braking efficiency, and premature lining wear. The genuine SINOTRUK HOWO plate is engineered with high-strength, anti-corrosion steel to bear heavy loads and resist impacts, ensuring stable braking for the life of the vehicle.
The AZ400745401571 plate is produced using progressive die stamping for consistent shape. Critical holes are punched and then reamed to exact tolerances, ensuring perfect alignment with axle components.
Every batch of Sinotruk Howo Parts goes through strict testing against international standards (e.g., ISO, CE) and Sinotruk’s original specs. Plates are 100% inspected for dimensional accuracy and coating integrity.
The development of the AZ400745401571 Brake Floor Assembly (Right) focused on providing a durable and perfectly rigid foundation for the braking system under the most severe conditions. These plates are subjected to constant vibration, high temperatures, and corrosive elements. A warped plate can cause serious braking issues. This genuine component is engineered to maintain its flatness and structural integrity for hundreds of thousands of kilometers.
The material and construction of the AZ400745401571 are critical. High-strength steel is stamped to create the complex shape with reinforcing ribs. The mounting flange and component bosses are carefully formed. After stamping, the plate undergoes a multi-stage cleaning and phosphating process, followed by an e-coat primer and a durable topcoat to resist rust and stone chipping.
Quality control for the AZ400745401571 is exhaustive. In addition to 100% dimensional inspection, sample plates are tested for flatness on a granite table and are subjected to salt spray testing to verify corrosion resistance. Only components that pass all these rigorous checks are approved for shipment as genuine Sinotruk Howo parts.
A failing brake floor assembly can cause a range of issues. Symptoms include a grabbing or pulling brake, unusual noise during braking, excessive lining wear on one shoe, or visible rust and scale on the plate. During brake service, the plate should be inspected for rust perforation, cracks, or distortion. If any issues are found, immediate replacement with a genuine AZ400745401571 assembly is recommended to ensure safe and balanced braking.
Installation requires expertise. The wheel, drum, and brake hardware are removed. The old AZ400745401571 plate is unbolted from the axle flange. The new plate is installed, ensuring it seats flat against the axle. All mounting bolts must be torqued to specification. New anchor pin bushings and camshaft bushings are often installed at this time. Their user-friendly design, based on OEM specifications, helps experienced technicians perform the replacement efficiently.
Field performance of the AZ400745401571 plate has proven its exceptional reliability. In a study of over 200 Howo trucks in heavy-haul operations, genuine brake floor assemblies showed no structural failure within 600,000 km. This reliability translates directly to enhanced safety, reduced downtime, and lower operating costs for fleet operators.
For parts managers, the AZ400745401571 brake floor assemblies are available individually, each with a lot traceability label. Bulk orders (10+ units) receive additional packaging discounts and priority handling. The assemblies are packaged in heavy-duty cartons with foam supports to prevent damage during transit.
Warranty and support for the AZ400745401571 are comprehensive. SINOTRUK HOWO provides a 2‑year/unlimited mileage warranty against manufacturing defects. Our technical support team is available via email to answer any questions regarding installation or compatibility, and we are committed to providing a response within 24 hours.
When ordering, always verify your truck’s axle model and side (right). The AZ400745401571 is specifically designed for the right-side wheel. Using the correct part ensures a perfect fit and optimal braking performance, ensuring seamless installation without extra modifications.
In summary, the AZ400745401571 Brake Floor Assembly (Right) is a vital component for ensuring the safety and reliability of your SINOTRUK HOWO truck’s braking system. Its premium materials, precision manufacturing, and rigorous testing make it the preferred choice for brake backing plates. Trust the genuine AZ400745401571 – it provides the stable foundation your brakes need.
During major brake overhauls, inspect the brake floor assembly for rust, cracks, or distortion. Check the anchor pin and camshaft bushing bores for wear. Replace the assembly if any damage is found, using a genuine AZ400745401571 plate.
Generic aftermarket brake plates often have poor quality steel, inaccurate hole positions, or inadequate corrosion protection, leading to brake misalignment and premature failure. The genuine AZ400745401571 is engineered to exact specifications with premium materials, ensuring a perfect fit and reliable performance, backed by factory-direct quality.
Generic aftermarket brake floor assemblies often have poor quality steel, inaccurate hole positions, or inadequate corrosion protection, leading to brake misalignment, uneven wear, and potential safety hazards. The genuine SINOTRUK HOWO AZ400745401571 Brake Floor Assembly (Right) is manufactured under strict quality controls, undergoing rigorous testing against international standards (e.g., ISO, CE) and Sinotruk’s original specs. Using premium materials and precision manufacturing ensures it withstands the extreme demands of heavy‑duty operation, delivering consistent performance and long life. This commitment to quality, combined with options for customization and small order acceptance, makes it the smart choice for maintaining your Howo truck.
By choosing the authentic part, you protect your investment and ensure your braking system performs reliably for years to come. For fleet managers and owner‑operators who demand the best, the genuine AZ400745401571 is the only responsible choice.
AZ400745401571 – 100% Genuine SINOTRUK HOWO Brake Floor Assembly (Right) • Build your brakes on a solid foundation • No forms, just quality parts.
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