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AZ9981320136 Inter-Axle Differential Assembly for Sinotruk HOWO
- - Exact OEM Compatibility: 100% match with original specifications for Sinotruk HOWO AC16 drive axles, enabling hassle-free direct installation without modifications.
- - Heavy-Duty Alloy Construction: Made of high-grade forged alloy steel with precision heat treatment, delivering exceptional resistance to torque, impact, and wear.
- - Optimized Traction & Stability: Balances rotational speed differences between drive axles during cornering or off-road travel, preventing power loss and enhancing traction on uneven terrain.
- - Precision Machined Components: Accurate gear tooth geometry ensures smooth, low-noise power transfer and extended service life even under continuous heavy-duty use.
- - Cost-Effective Reliability: Offers factory-grade performance at a competitive price, a reliable alternative to original parts for commercial truck fleets.
Product Specifications
OEM Part Number AZ9981320136
Product Type Inter-Axle Differential Assembly
Material High-strength heat-treated alloy steel
Overall Length Approx. 320 mm
Maximum Outer Diameter Approx. 160 mm
Output Shaft Spline Count 42 teeth
Ring Gear Teeth Count 30/31 teeth (AC16 standard)
Net Weight Approx. 25 kg
Certification ISO/TS16949, CCC, CE
Product Introduction
The AZ9981320136 inter-axle differential assembly is a critical core component of the Sinotruk HOWO AC16 series drive axle, installed in the middle axle to distribute engine power between the middle and rear drive axles. It compensates for rotational speed differences between axles during vehicle cornering, uneven terrain travel, or driving on slippery surfaces, ensuring balanced power delivery to both axles. This effectively reduces drivetrain component stress, prevents premature tire wear, and significantly improves vehicle stability and off-road capability.
All key components, including the differential carrier, planetary gears, side gears, and splined output shaft, are precision machined and undergo strict heat treatment processes to withstand the high torque and heavy loads of heavy-duty commercial trucks, making it a durable and reliable replacement for original equipment parts.
Applicable Models
- Sinotruk HOWO Truck Series: A7, T7H, 371HP/380HP/420HP heavy-duty trucks
- Drive Axle Type: AC16 series dual-drive axles (6x4 / 8x4 configurations)
- Vehicle Applications: Dump trucks, tractor units, heavy cargo trucks, and engineering vehicles for construction, mining, and long-haul transportation
