

OEM AZ712134015002
Discover the robust construction of the AZ712134015002 End Cover Assembly, a critical sealing and protective component engineered for SINOTRUK Howo trucks. This genuine part is an integral part of our premium Sinotruk howo parts portfolio, manufactured from high‑strength nodular cast iron to provide a rigid, leak‑proof enclosure for transmission and axle housings. The AZ712134015002 assembly ensures perfect sealing, protects internal components from contamination, and guarantees long‑term durability.
| Parameter | Specification |
|---|---|
| OEM Number | AZ712134015002 |
| Product Name | End Cover Assembly |
| Brand / Series | SINOTRUK Howo genuine |
| Material | Nodular cast iron QT450‑10 |
| Tensile Strength | ≥ 450 MPa |
| Overall Diameter | 210 mm |
| Mounting Hole Circle | 185 mm (8 holes) |
| Weight | 2.8 kg |
| Surface Finish | Painted (black, corrosion resistant) |
| Compatible Models | Howo A7, T7H, ZZ4257, ZZ1257 |
Cast from high‑grade QT450‑10 nodular iron, this end cover offers exceptional strength and ductility, resisting cracking under vibration and impact.
All mating faces and bolt holes are CNC machined to exact tolerances, guaranteeing a perfect, leak‑proof seal against the housing.
Durable black paint coating provides excellent resistance to rust and road chemicals, ensuring long service life in harsh environments.
Every cover assembly undergoes dimensional and magnetic particle inspection to guarantee zero defects and consistent quality.
This end cover assembly is a direct replacement for the following SINOTRUK Howo systems and vehicle series:
The AZ712134015002 end cover assembly is manufactured from high‑quality QT450‑10 nodular cast iron, which offers excellent strength, ductility, and fatigue resistance. The casting process is carefully controlled to eliminate porosity and ensure uniform material properties. After casting, the cover undergoes stress relieving and then precision machining on multi‑axis CNC centers. All critical surfaces – the sealing face, bolt holes, and pilot diameter – are machined to tolerances within 0.02 mm. Finally, the cover is coated with a durable black paint to resist corrosion. This meticulous process ensures that this critical sealing component meets or exceeds the original equipment specifications.
In heavy‑duty transmissions and axles, end covers serve as the primary barrier against oil leakage and contamination. They must withstand internal pressures, thermal expansion, and external impacts. The AZ712134015002 is engineered to handle the extreme conditions inside Howo drivetrains, with a tensile strength exceeding 450 MPa. Its robust construction and precise machining ensure that the gasket compresses evenly, creating a reliable seal. Fleet operators who have switched to this genuine part report zero leaks and extended component life, directly impacting their bottom line.
Installation of the AZ712134015002 cover should be performed by a qualified technician using proper tools. The mating surface on the housing must be thoroughly cleaned of old gasket material and debris. A new gasket is positioned, and the cover is installed. Bolts must be tightened in a crisscross pattern to the specified torque value to ensure even compression. Using genuine parts guarantees that all clearances are maintained, preventing premature wear and costly downtime.
The quality control for this cover includes 100% inspection of critical dimensions using coordinate measuring machines (CMM). Every cover is also tested for hardness and material integrity. Samples from each production batch undergo magnetic particle inspection to detect surface cracks. These rigorous checks guarantee that the AZ712134015002 you receive will deliver the same performance and durability as the original component installed in new Howo trucks.
Environmental sustainability is considered in the production of this cover. The cast iron used is sourced from foundries with certified environmental management systems, and a significant portion of the material is recycled scrap. The paint used is solvent‑free and meets strict environmental regulations. At the end of its long service life, the cover is fully recyclable, contributing to a circular economy. By choosing the genuine component, you are not only ensuring the reliability of your vehicle but also supporting responsible manufacturing practices.
For maintenance departments and rebuilders, the AZ712134015002 cover is available individually or as part of a complete gasket kit. Each cover is packaged in a heavy‑duty cardboard box with foam supports to protect the machined surfaces during shipping. A data sheet with the actual measured dimensions is included with each cover, providing full traceability. Bulk orders receive quantity discounts and can be shipped directly to your workshop from our regional distribution centers.
Field performance data collected from over 500 Howo trucks operating in various conditions (highway, off‑road, mining) shows that this cover has a mean time between failures (MTBF) exceeding 1,000,000 kilometers when properly installed. This exceptional reliability is the result of superior material selection and precise manufacturing. Many fleet managers have standardized on this genuine part for all their drivetrain overhauls, reducing parts inventory complexity and ensuring consistent quality.
When ordering, please verify your vehicle’s transmission or axle model to ensure correct fitment. The AZ712134015002 cover is specifically designed for applications with a 210 mm outer diameter and 8‑hole mounting pattern. For other sizes, please consult our cross‑reference guide. Our technical team is available to answer any questions regarding compatibility, but please note that we do not provide direct contact information on this page as per our policy; instead, you may refer to the documentation included with the part or contact your local SINOTRUK dealer.
In summary, the AZ712134015002 end cover assembly represents the highest standard of quality and engineering for SINOTRUK Howo trucks. Its nodular iron construction, precision machined surfaces, and durable coating ensure reliable sealing and extended drivetrain life. By choosing this genuine component, you protect your investment and keep your fleet on the road. Trust the AZ712134015002 – the cover that heavy‑duty sealing demands.
During transmission or axle service, inspect the AZ712134015002 cover for cracks, corrosion, or signs of leakage. Check bolt torque. Replace immediately if any damage is found.
Always replace the cover if damaged. Use a new gasket and torque bolts to specification. Never reuse an old gasket.
Only the authentic AZ712134015002 cover carries SINOTRUK’s material certification. Imitations often use low‑grade iron that cracks or deforms, leading to oil leaks and potential component failure. The genuine part is traceable to an ISO 9001 foundry, with 100% inspection. When you install this cover, you preserve the resale value of your Howo and avoid costly downtime. Fleet operators report that using the OEM component cuts unscheduled drivetrain repairs by 60%.
Preparation: Clean the housing mating surface thoroughly. Remove all old gasket material. Inspect the new cover for shipping damage.
Torquing: Place a new gasket, position the cover, insert bolts, and tighten in a crisscross pattern to the specified torque. Do not overtighten.
After installation, run the system and check for leaks. Re‑torque bolts after a short period if necessary.
The flat, precision‑machined face and proper bolt torque ensure a perfect seal, eliminating oil leaks and keeping the drivetrain clean.
The material maintains its mechanical properties from -40°C to +200°C, ensuring reliable sealing in all climates.
The cast iron contains over 90% recycled content. Production scrap is returned to the foundry for remelting.
At end of life, the cover is 100% recyclable, supporting circular economy principles and reducing landfill waste.
Every AZ712134015002 cover leaves the factory with a laser‑etched part number for full traceability. When you order from our official warehouse, you receive the latest production batch with optimized casting technology – a detail many suppliers ignore. Pair the cover with genuine SINOTRUK Howo gaskets and bolts for a 100% match.
To verify the authenticity of your AZ712134015002, check the casting mark on the cover. Our global network ensures fast delivery to any heavy‑duty workshop. Trust this cover to keep your Howo drivetrain sealed and reliable – it’s the component that makes the difference between average and exceptional performance.
AZ712134015002 – 100% Genuine SINOTRUK Howo End Cover Assembly • Built for the long haul • No forms, just quality parts.