Fast Gearbox Assembly 12JSD200T
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Fast Gearbox Assembly 12JSD200T

12JSD200T is a heavy-duty 12-speed manual twin countershaft gearbox assembly produced by Fast (Shaanxi Fast Auto Drive Group), with 12 forward gears + 2 reverse gears, main box full synchronizer structure and dual-H shift control, rated for 2000 N·m maximum input torque. It adopts main & auxiliary box compound structure and reinforced gear design, widely used on 6x4 heavy tractors, bulk cargo trucks and engineering vocational vehicles for long-distance heavy haulage and mountain transport. It solves common faults such as persistent oil leakage, difficult shifting, abnormal noise and internal gear damage under continuous heavy-load operation.
Availability:
Quantity:
  • 12JSD200T

  • Fast

Product parameters

Basic Info


    • Model: 12JSD200T

    • Brand: FAST (Shaanxi Fast Auto Drive Group)

    • Structure: 12 forward gears + 2 reverse gears, twin countershaft, main box full synchronizer, dual-H manual shift

    • Max rated torque: 2000 N·m

    • Head gear ratio: 15.53

    • Oil capacity: approx. 16L

    • Weight: approx. 375kg

    • Applicable Vehicles: 6x4 heavy semi-trailer tractors, long-distance logistics trucks, dump trucks and heavy vocational vehicles

    • Category: Heavy Truck Drivetrain Parts – Complete 12-Speed Manual Gearbox Assembly

    • Material: Cast iron housing, high-strength alloy steel gears/shafts, full synchronizer assemblies, oil seals and bearings



Material & Advantages


  1. Twin countershaft + main box full synchronizer design, smooth shifting, effectively reducing gear impact wear and improving driving comfort

  2. Precision deep heat-treated alloy steel gears, high structural rigidity, stable meshing, low noise and excellent heavy-load durability

  3. Ultra-wide speed ratio range, balancing strong low-speed climbing torque and highway cruising fuel economy for mixed mountain and highway routes

  4. Robust cast iron housing and high-performance oil seals, reducing oil leakage and improving overall structural rigidity under vibration conditions

  5. Standard mounting interface, compatible with mainstream heavy truck chassis and clutch systems, easy maintenance and direct replacement

  6. Mature Fast heavy-duty transmission design, strong overload resistance and long service life for long-haul heavy transport



Application


For full transmission overhaul and replacement of matched heavy-duty tractors and vocational vehicles. Confirm clutch housing interface and mounting dimensions before installation, fill with specified heavy-duty gear oil, test shift function and check for leaks before formal operation.



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 modificationPacking: 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
Email: truckparts@yongliwei.com 
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            transmission@yongliwei.com
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WhatsApp: +86-13593740499 / +86-18807289527/+8618772950034
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