Shaanxi Zhixing Shengbang Trading Co., Ltd
| Availability | In stock |
| Service | 24 Hours Online Service |
| Supply Ability | 500PCS |
| Product Name | Manual Synchronizer Gearbox Assembly |
| Delivery Time | 3-5days |
| Package | Customer Requirements/neutral Packaging/brand Packaging |
| Warranty | 6 months |
| Payment Terms | L/C,D/A,D/P,T/T |
| Purpose | For replace/repair |
| Payment | T/T,,Alipay |
| Applicable Model | For HOWO MAX、HOWO T7H、HOWO TH7、HOWO TX/SITRAK C7H、G7S |
| Shipping | Courier/Air Freight/Sea Freight or According to customer requirements |
| Packaging Details | Unified cardboard, packaging with bubble wrap inside and wrapped with film outside. Large items can be palletized or packaged according to customer needs |
| Material | High-Strength Die-Cast Aluminum Alloy Housing |
| Certification | CQC URS CE |
| Model Number | HW25712XSTL |
| Place of Origin | China |
| Brand Name | SINOTRUK |
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Product Specification
| Availability | In stock | Service | 24 Hours Online Service |
| Supply Ability | 500PCS | Product Name | Manual Synchronizer Gearbox Assembly |
| Delivery Time | 3-5days | Package | Customer Requirements/neutral Packaging/brand Packaging |
| Warranty | 6 months | Payment Terms | L/C,D/A,D/P,T/T |
| Purpose | For replace/repair | Payment | T/T,,Alipay |
| Applicable Model | For HOWO MAX、HOWO T7H、HOWO TH7、HOWO TX/SITRAK C7H、G7S | Shipping | Courier/Air Freight/Sea Freight or According to customer requirements |
| Packaging Details | Unified cardboard, packaging with bubble wrap inside and wrapped with film outside. Large items can be palletized or packaged according to customer needs | Material | High-Strength Die-Cast Aluminum Alloy Housing |
| Certification | CQC URS CE | Model Number | HW25712XSTL |
| Place of Origin | China | Brand Name | SINOTRUK |
| High Light | Sinotruk HOWO 12-speed manual transmission ，HW25712XSTL sync gearbox assembly ，Heavy truck transmission parts | ||
SINOTRUK HOWO Truck Transmission System Parts HW25712XSTL 12-Speed Manual Sync Gearbox Transmission Assembly
The SINOTRUK HOWO HW25712XSTL Manual Synchronizer Gearbox Assembly is a heavy-duty transmission component belonging to the truck drivetrain system. It is designed to transfer engine power and torque to the vehicle drive axle through multiple gear ratios, allowing the truck to achieve efficient operation under different load and road conditions. The HW25712XSTL features a 12-speed manual synchronized transmission structure, incorporating a twin counter shaft design and synchronizer mechanism to support high torque transmission requirements. Available technical references indicate that this gearbox has a maximum input torque of around 2500 N·m, a maximum input speed of approximately 2600 RPM, and a total length of about 993 mm. During heavy-duty vehicle operation, the gearbox continuously experiences torque changes, gear shifting cycles, vibration and temperature variation. Proper lubrication, correct clutch operation and regular inspection of internal gears, synchronizers, bearings and seals are important for maintaining transmission performance. If abnormal noise, difficult shifting, gear jumping or oil leakage occurs, inspection should include the complete transmission system, including clutch components, shift mechanism, oil condition and internal gearbox parts. Before purchasing HW25712XSTL, buyers should confirm the transmission model, truck configuration, engine torque range, PTO requirements, housing type and original gearbox identification information to ensure correct compatibility.
Product Specification
| Product Name |
Manual Synchronizer Gearbox Assembly |
|---|---|
| Part Number |
HW25712XSTL |
| Condition | New |
| Origin | China |
| Quality Standard | 100% Tested |
| Quality Certification | ISO, CCC, GSO, CE, SGS, TUV |
| Weight | 290.0 KG |
| Dimensions |
99.5 cm |
The synchronizer mechanism helps match gear speeds during shifting, making gear engagement smoother and reducing shifting difficulty.
Regular maintenance includes:
Company Details
Business Type:
Trading Company
Year Established:
2025
Total Annual:
10 million RMB-15 million RMB
Employee Number:
10 people~15 people
Ecer Certification：
Verified Supplier
Who We Are We are a premier, export-oriented supply chain specialist dedicated exclusively to China Heavy-Duty Truck Parts.Our core expertise lies in providing 100% precise components for SHACMAN, while offering comprehensive supply chain coverage for China’s leading commercial vehicle brand... Who We Are We are a premier, export-oriented supply chain specialist dedicated exclusively to China Heavy-Duty Truck Parts.Our core expertise lies in providing 100% precise components for SHACMAN, while offering comprehensive supply chain coverage for China’s leading commercial vehicle brand...
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