
Product Introduction
The FAST 12JSDX240TA+QH50 transmission gearbox assembly is a high-performance heavy-duty manual transmission designed for commercial trucks, tractor heads, construction vehicles, and long-distance logistics transportation. Built to OEM standards, this transmission provides excellent torque transmission capability, stable shifting performance, and long-lasting durability under demanding operating conditions.
Featuring precision-engineered gears, reinforced transmission housing, and advanced synchronization technology, the 12JSDX240TA+QH50 gearbox ensures efficient power delivery and reduced transmission loss. Its optimized gear ratio structure improves fuel efficiency, driving comfort, and vehicle stability during heavy-load operations, mountain transportation, and high-speed logistics routes.
This gearbox assembly is widely used in heavy-duty truck maintenance, fleet repair centers, aftermarket replacement markets, and wholesale commercial vehicle parts distribution. It is suitable for direct replacement installation and professional repair applications.
Each transmission assembly undergoes strict quality inspection and performance testing before shipment to ensure reliable operation, stable durability, and long service life for global customers.

Technical Specifications
| Item | Specification | Item | Specification |
| Product Name | Manual Transmission Gearbox Assembly | Model | 12JSDX240TA+QH50 |
| Brand | FAST | Transmission Type | Manual Transmission |
| Gear Speeds | 12 Forward / 2 Reverse | Application | Heavy Duty Trucks |
| OEM Standard | Yes | Material | High Strength Alloy Steel |
| Synchronizer Type | Advanced Synchronizer System | Installation | Direct Replacement |
| Condition | New / Remanufactured | Cooling Type | Natural Cooling |
| Quality Test | 100% Tested Before Delivery | Packaging | Export Standard Packaging |
| Origin | China | Availability | In Stock / Available Upon Request |
Vehicle Fitment
| Vehicle Brand | Compatible Models |
| SINOTRUK HOWO | HOWO, HOWO A7, HOWO T7H, HOWO TX, HOWO MAX |
| SINOTRUK SITRAK | C5H, C7H, G7 |
| SHACMAN | F2000, F3000, X3000, X5000, H3000 |
| FAW JIEFANG | J5P, J6P, J7 |
| DONGFENG | Tianlong, Tianjin KR, KL, GX |
| FOTON AUMAN | ETX, GTL, EST, EST-A |
| BEIBEN | NG80, V3 |
| VOLVO | FH, FH12, FH13, FH16, FM, FMX |
| SCANIA | P-Series, G-Series, R-Series, S-Series |
| MERCEDES-BENZ | Actros, Arocs, Axor, Atego |
| MAN | TGX, TGS, TGM, TGL |
| DAF | XF, XG, XG+, CF, LF |
| IVECO | Stralis, Trakker, S-Way |
| RENAULT TRUCKS | Magnum, Premium, T-Series, K-Series |
Payment & Shipping
| Category | Options |
| Payment Methods | T/T (Bank Transfer), PayPal, Western Union, MoneyGram, Visa, MasterCard, L/C (Letter of Credit), Alibaba Trade Assurance |
| Express Shipping | DHL, FedEx, UPS, TNT |
| Freight Shipping | Air Freight, Sea Freight, Railway Freight |
| Delivery Time | Express: 3-7 Working Days; Air Freight: 7-15 Days; Sea Freight: 20-45 Days |
| Shipping Coverage | Worldwide Shipping Available |
| Trade Terms | EXW, FOB, CFR, CIF, DDP |
