OEM AZ9925521267 The Rear spring mounting bolt with OEM number AZ9925521267 is a precision-engineered, heavy-duty fastener designed for Howo and Sitrak commercial vehicle suspension systems. This critical bolt ensures secure attachment of the rear leaf springs to the axle, providing stability, load distribution, and safe vehicle operation. As a genuine Howo/Sitrak truck parts solution, the AZ9925521267 rear spring mounting bolt is manufactured from high-strength alloy steel with a precision-rolled thread and advanced heat treatment, offering a perfect fit and exceptional durability. Its robust construction and precise engineering make it the ideal choice for fleets seeking to maximize suspension reliability and minimize downtime.
The AZ9925521267 rear spring mounting bolt is engineered with a precision-rolled thread and optimized head design, ensuring secure and reliable attachment of the leaf springs to the axle.
Constructed from high-strength alloy steel with advanced heat treatment and a corrosion-resistant coating, this bolt resists fatigue, stretching, and corrosion, providing exceptional service life.
This mounting bolt is engineered to maintain precise clamping force and alignment, ensuring reliable suspension performance and vehicle stability. The AZ9925521267’s precise manufacturing tolerances and superior material properties minimize the risk of loosening or failure, contributing to improved safety and reduced maintenance. Field tests have demonstrated a significant reduction in suspension-related issues and extended service intervals, making it a trusted choice for demanding transport operations.
| Parameter | Value / Specification |
|---|---|
| OEM Number | AZ9925521267 |
| Thread size | M24 x 2.0 (metric) |
| Length (overall) | 150 mm |
| Material | High-strength alloy steel (SAE 4340) |
| Hardness | 33-39 HRC |
| Coating | Zinc plating (yellow passivation) |
| Weight | 0.85 kg |
All specifications meet or exceed OEM standards. The bolt includes a pre-installed washer and is ready for installation. It is compatible with all major Howo and Sitrak rear suspension systems. The AZ9925521267 is factory-tested to ensure dimensional accuracy, hardness, and optimal clamping performance.
This mounting bolt is also cross-compatible with certain DAF and MAN truck models that use similar suspension architectures. Always verify compatibility with your vehicle’s VIN and suspension configuration to ensure correct fitment. The AZ9925521267 is a direct replacement for multiple OEM bolts, offering a cost-effective solution without compromising on quality or performance.
Clean the bolt hole and mating surfaces thoroughly. Apply a thread locker (medium strength) to the bolt threads. Torque to OEM specifications (350 Nm) using a calibrated torque wrench.
Each AZ9925521267 bolt undergoes 100% dimensional inspection, hardness testing, and tensile strength verification. Certified to ISO 9001:2015 and IATF 16949 standards, ensuring consistent quality and reliability.
Why choose this mounting bolt? The AZ9925521267 delivers unmatched clamping force and durability, ensuring your rear suspension operates securely and reliably. This not only reduces maintenance costs but also extends the life of springs and bushings, maximizing the uptime and safety of your fleet.
The high-strength alloy steel and corrosion-resistant coating provide exceptional resistance to fatigue and corrosion, with field tests showing a service life exceeding 1.2 million km in heavy-duty applications.
Tested in environments ranging from -40°C to +55°C, the AZ9925521267 maintains its clamping force and structural integrity, ensuring reliable performance in all climates.
Independent fleet trials have shown that vehicles equipped with this mounting bolt experience 25% fewer suspension-related failures, leading to significant cost savings and improved vehicle safety over the vehicle’s lifetime.
Each bolt is shipped with a certificate of conformance and a traceability label. Bulk orders are packaged in partitioned boxes to prevent damage during transit. The AZ9925521267 is stocked in regional warehouses for rapid dispatch worldwide.
Choosing the Rear spring mounting bolt with part number AZ9925521267 represents a critical investment in the safety and reliability of your Howo or Sitrak truck’s suspension system. Its advanced engineering, robust construction, and precision fitment deliver tangible benefits in secure mounting, durability, and extended component life. This is not just a replacement part; it’s a performance upgrade that ensures your fleet operates safely and efficiently. Trust in a component engineered to the highest standards—backed by thousands of satisfied fleet operators worldwide. Upgrade your suspension system with the reliability of AZ9925521267 and experience the difference in performance and peace of mind.
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