OEM AZ9939311745 The Drive shaft with OEM number AZ9939311745 is a precision-engineered, heavy-duty power transfer component designed for Howo and Sitrak commercial vehicles. This critical drivetrain part ensures efficient and reliable transmission of torque from the transmission to the rear axle, enabling smooth and powerful vehicle operation. As a genuine Howo/Sitrak truck parts solution, the AZ9939311745 drive shaft is manufactured from high-strength alloy steel with precision-welded yokes and a dynamically balanced design, offering a perfect fit and exceptional durability. Its robust construction and advanced balancing technology make it the ideal choice for fleets seeking to maximize drivetrain reliability and minimize vibrations.
The AZ9939311745 drive shaft is engineered to transmit high torque with minimal power loss, ensuring efficient power delivery from the transmission to the wheels for optimal vehicle performance.
Constructed from high-strength alloy steel with precision-welded yokes and a dynamically balanced design, this drive shaft resists torsional fatigue, bending, and wear, providing exceptional service life.
This drive shaft is engineered to maintain precise balance and alignment, ensuring smooth and vibration-free operation. The AZ9939311745’s precise manufacturing tolerances and superior material properties minimize NVH (Noise, Vibration, Harshness), contributing to improved driver comfort and reduced wear on supporting components. Field tests have demonstrated a significant reduction in drivetrain vibrations and extended U-joint life, making it a trusted choice for demanding transport operations.
| Parameter | Value / Specification |
|---|---|
| OEM Number | AZ9939311745 |
| Length (overall) | 1850 mm (standard) |
| Tube diameter | 89 mm (3.5″) |
| Material | High-strength alloy steel (SAE 1040) |
| Yoke type | End yoke with U-bolt |
| Max. operating torque | 26,000 Nm |
| Weight | 48 kg (assembly) |
All specifications meet or exceed OEM standards. The drive shaft includes pre-installed U-joints and is ready for installation. It is compatible with all major Howo and Sitrak truck chassis, including the A7, T7H, and C7H series. The AZ9939311745 is factory-tested to ensure dimensional accuracy, balance, and optimal power transfer performance.
This drive shaft is also cross-compatible with certain DAF and MAN truck models that use similar driveline architectures. Always verify compatibility with your vehicle’s VIN and chassis configuration to ensure correct fitment. The AZ9939311745 is a direct replacement for multiple OEM drive shafts, offering a cost-effective solution without compromising on quality or performance.
Ensure the mating flanges are clean and aligned. Use new bolts and torque to OEM specifications (120 Nm). Check for correct phasing of the U-joints to prevent vibrations.
Each AZ9939311745 drive shaft undergoes 100% dimensional inspection, dynamic balancing, and U-joint articulation testing. Certified to ISO 9001:2015 and IATF 16949 standards, ensuring consistent quality and reliability.
Why choose this drive shaft? The AZ9939311745 delivers unmatched power transfer efficiency and durability, ensuring your vehicle operates with minimal vibration and maximum reliability. This not only reduces maintenance costs but also extends the life of U-joints, differentials, and other drivetrain components, maximizing the uptime and productivity of your fleet.
The high-strength steel tube and precision-welded yokes provide exceptional resistance to torsional fatigue, with field tests showing a service life exceeding 1.2 million km in heavy-haul applications.
Tested in environments ranging from -40°C to +55°C, the AZ9939311745 maintains its balance and structural integrity, ensuring reliable performance in all climates.
Independent fleet trials have shown that vehicles equipped with this drive shaft experience 20% longer U-joint life and 10% fewer driveline vibrations, leading to significant cost savings and improved driver comfort over the vehicle’s lifetime.
Each drive shaft is shipped with a protective oil coating, a set of new mounting bolts, and a detailed installation manual. Bulk orders are palletized and shrink-wrapped for maximum protection during transit. The AZ9939311745 is stocked in regional warehouses for rapid dispatch worldwide.
Choosing the Drive shaft with part number AZ9939311745 represents a significant investment in the performance and reliability of your Howo or Sitrak truck’s drivetrain. Its advanced engineering, robust construction, and precision balance deliver tangible benefits in power transfer efficiency, reduced vibrations, and extended component life. This is not just a replacement part; it’s a performance upgrade that ensures your fleet operates at its best. Trust in a component engineered to the highest standards—backed by thousands of satisfied fleet operators worldwide. Upgrade your drivetrain with the reliability of AZ9939311745 and experience the difference in performance and peace of mind.
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