‌Genuine Sinotruk HOWO Truck Drive Axle Cover (OEM Part No. AZ9231320260) - Heavy-Duty Differential Housing Protection

This ‌OEM Sinotruk HOWO drive axle cover (Part No. AZ9231320260)‌ is designed for ‌heavy-duty differential housings‌, featuring ‌GG25 cast iron construction‌ with ‌machined sealing grooves‌ for optimal gasket compression. The ‌reinforced rib design‌ increases structural rigidity by 40% compared to aftermarket alternatives.

✔ ‌Oil-resistant‌ (compatible with SAE 85W-140 gear oil)
✔ ‌Precision CNC machining‌ (±0.05mm flatness tolerance)
✔ ‌Direct replacement‌ for HOWO ZZ3257/ZZ3317 series
✔ ‌Withstands‌ 15-ton axle loads

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‌Technical Specifications‌:

Parameter	Specification
Part Number	AZ9231320260
Material	GG25 Cast Iron
Bolt Pattern	12×M16-1.5
Sealing Surface	Ra 3.2μm finish
Weight	8.7 kg
Standards	ISO 185, GB/T 9439

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‌Installation Notes‌:

1. ‌Preparation‌: Clean mating surface with solvent and inspect for burrs.
2. ‌Gasket Application‌: Apply uniform layer of RTV silicone (3mm bead).
3. ‌Torque Sequence‌: Tighten bolts in star pattern to ‌120±5 Nm‌.
4. ‌Post-Installation‌: Check for oil leaks after 50km of operation.