ZF 12TX2621TD Gearbox Assembly 1358 040 056
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ZF 12TX2621TD Gearbox Assembly 1358 040 056

12TX2621TD is a ZF Traxon series 12-speed heavy-duty automated manual (AMT) transmission assembly, part number 1358 040 056, designed for modern high-horsepower long-haul heavy trucks. It features modular AMT structure, integrated optional hydraulic retarder, intelligent shift control system, rated for 2600 N·m maximum input torque. It adapts to mountain climbing, long-distance highway and heavy cargo transport, balancing strong low-speed torque and high-speed fuel efficiency, solving faults such as abnormal shifting, overheating, oil leakage, control system failure and synchronizer damage.

 

Availability:
Quantity:
  • 1358 040 056

  • ZF

Product parameters

Basic Info

    • Model: 12TX2621TD (ZF Traxon series)

    • Part No.: 1358 040 056

    • Brand: ZF (ZF Friedrichshafen AG)

    • Structure: 12 forward gears + 2 reverse gears, automated manual AMT transmission, helical gears, electronic shift control, optional integrated hydraulic retarder

    • Max Rated Torque: 2600 N·m

    • Gear Ratio Range: 16.69 ~ 0.78 (overdrive design)

    • Weight: approx. 435kg

    • Oil Capacity: approx. 20L, specified ZF heavy-duty transmission fluid

    • Applicable Vehicles: Sinotruk Sitrak, Howo, J7, MAN, DAF, Renault and other high-horsepower heavy-duty tractor trucks

    • Category: Heavy Truck Drivetrain Parts – 12-Speed AMT Transmission Assembly

    • Material: Reinforced cast iron housing, high-alloy steel helical gear sets, synchronizer assemblies, electronic shift actuator, TCU control unit, retarder components, bearings, oil seals



  • Material & Advantages


  • Traxon modular 12-speed AMT structure, intelligent adaptive shifting, reduces driver fatigue and improves fuel economy

  • Precision fine-pitch helical gears, low noise vibration, high durability for continuous heavy-load long-haul operation

  • Optional integrated hydraulic retarder, providing powerful auxiliary braking, greatly improving mountain road safety

  • Optimized cooling system, stable thermal performance for full-day long-distance transport cycles

  • Multiple PTO mounting interfaces, adaptable to mixers, tankers and other special vocational vehicles

  • Standard mounting interface, compatible with mainstream heavy truck chassis, supports ZF professional diagnosis and calibration



Application


For full transmission overhaul and replacement of high-horsepower long-haul heavy trucks. Confirm clutch housing, input shaft spline, flange and electrical connector specifications before installation; fill with specified ZF transmission fluid; complete TCU adaptive learning and retarder calibration after installation; test shift function, retarder operation and check for oil leaks and abnormal noise before formal operation. Follow official ZF maintenance schedules for fluid replacement and inspection.



Origin & Lead Time

In stock, delivery within 1–3 working days; bulk orders: 4–7 days; sea freight: 10–24 days


MOQ & Packing

MOQ: 1 piece
Warranty: 6 months, not covered for improper programming, water damage, overvoltage and unauthorized circuit modification
Packing: Anti-static bag + shockproof foam + reinforced export carton

About yongliwei

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Gearboxes assembly include brand ZF, Eaton, FAST, Allison, DONGFENG, DC, Benz, volvo, HOWO, WLY etc. Gearboxes parts includegear, synchronizer, PTO, housing, bearings, shaft, top cover, sensors, wireness, repair kits... etc.


Our products have been exported to more than 50 countries and regions such as Korea, Chile, Russia, Kazakhstan, USA, Ecuador, Turkey, Iran, Africa, Latin America, etc., and have been unanimously recognized by customers.


In the future, we will be committed to creating higher-end quality and more intimate service. And a more comfortable customer experience to build Yongliwei company into an auto parts supplier with excellent corporate culture, scientific development concept and continuous innovation ability.

Company information (1)

Shiyan Yongliwei Industry and Trading Co., Ltd. is a modern enterprise integrating design, development, production and sales of gearbox assembly and gearbox parts.


Our company was founded in Hubei province, China, and has been specialized the truck gearboxes in Chinese offline market for 21 years .Our parts are the leader of gearboxes area in the China now.


Our company was set up in the largest truck parts production base in the world –Shiyan city, Hubei, China, to meet the demand for products in the Asia and South American markets, a professional international trade sales team was born in Hubei in 2021.


Shiyan Yongliwei is focusing on creating high quality, high technology and high standard gearboxes and its parts.

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* 8000 square meters of large warehouse.

* A number of maritime, land, air transport international logistics companies work closely together.

* To provide you with convenient, fast and low-cost e-commerce one-stop service.


About Us
19 years experience for gearbox, 5000㎡ warehouse stocked parts, professional team and high quality after-sale service, your inquiry will be our priority.
Contact Us
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