- Yuncheng, Shanxi, China
Premium components ensuring smooth shifting, durability, and precise fit for all models.
Dayun gearbox parts cover a comprehensive range of components, including main shafts, countershafts, input/output shafts, helical and reverse gears, synchronizer assemblies with brass cones, needle and roller bearings, thrust washers, shift forks, selector rails, oil seals, gaskets, and clutch release forks. All parts are precision-machined to strict factory tolerances, ensuring perfect fitment for Dayun manual transmissions (12JSD series) and automated gearboxes found in N8, N8V, N9, and flagship V9 trucks. These components are engineered for heavy-haul operations, providing smooth gear engagement, reduced noise, and consistent torque transfer under extreme loads.
Fast Gear (Faster) is the primary transmission supplier for Dayun trucks, equipping the vast majority of heavy-duty and medium-duty models. Renowned for durability and smooth shifting, Fast Gear transmissions form the backbone of Dayun’s powertrain, ensuring reliable performance in demanding haulage and construction applications.
The 12JSD series manual transmissions are widely used on N8V, N8E, and N9 models, with torque ratings from 2000 to 2400 N·m. For flagship V9 trucks, Fast Gear offers 16-speed manuals and AMT variants, such as the C16JSDQXL260T and F16JZ26A, delivering enhanced comfort and efficiency for long-haul operations.
Beyond Fast Gear, Dayun also equips certain premium models with ZF transmissions for superior shifting precision and lightweight construction. Medium and light-duty trucks like the Aopuli series feature WLY or Mengwo gearboxes for cost-effective city logistics. However, Fast Gear remains the dominant choice across Dayun’s lineup, trusted by fleets worldwide for its proven reliability and extensive aftermarket support.
Our hot Dayun gearbox parts include main shafts, countershafts, synchronizer assemblies, helical gears, and shift forks. Precision-engineered to factory tolerances, they ensure smooth shifting, reduced wear, and extended service life. All are genuine-quality, competitively priced, and available for immediate dispatch to minimize vehicle downtime.
Dayun gearbox parts are compatible with N‑series (N8, N8V, N9), V9, and Xianglong trucks, fitting Fast Gear, ZF, and WLY transmissions. Engineered for precise fitment, they ensure smooth shifting and durability across heavy‑, medium‑, and light‑duty Dayun models.
We are your trusted partner for genuine Dayun Gearbox parts, offering uncompromised quality, extensive stock, fast delivery, and professional support.
Every part meets strict factory specifications with full traceability and warranty coverage.
We maintain a vast inventory covering all Dayun models for immediate order fulfillment.
Our efficient logistics ensure rapid dispatch, minimizing your vehicle downtime significantly.
Our technical team offers accurate fitment guidance and responsive after‑sales assistance.
Get quick answers on Dayun gearbox parts—covering quality, compatibility, warranty, delivery, and authenticity verification.
Yes, all parts are sourced from authorized suppliers and meet strict factory specifications.
They fit Fast Gear, ZF, and WLY transmissions used in Dayun N‑series and V9 trucks.
We provide a 12‑month warranty against defects under normal operating conditions.
Most orders ship within 5‑7 business days, with delivery in 30 business days.
Scan the QR code or check the unique ID on our official verification portal.
Dayun Truck delivers durable, efficient commercial vehicles with proven powertrains, genuine parts support, and nationwide 24/7 service.
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