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SINOTRUK HOWO HW25712XSTL 12-Speed Manual Sync Gearbox Transmission Assembly Heavy Truck Parts
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SINOTRUK HOWO HW25712XSTL 12-Speed Manual Sync Gearbox Transmission Assembly Heavy Truck Parts
  • name
  • name
  • name

SINOTRUK HOWO HW25712XSTL 12-Speed Manual Sync Gearbox Transmission Assembly Heavy Truck Parts

MOQ: 1PCS
Price: negotiation
Standard Packaging: Unified cardboard, packaging with bubble wrap inside and wrapped with film outside. Large items can be palletized or packaged according to customer needs
Delivery Period: 3-5days
Payment Method: L/C,D/A,D/P,T/T
Supply Capacity: 500PCS
Detail Information
Product Description
Detail Information
Place of Origin
China
Brand Name
SINOTRUK
Certification
CQC URS CE
Model Number
HW25712XSTL
Shipping:
Courier/Air Freight/Sea Freight Or According To Customer Requirements
Service:
24 Hours Online Service
Availability:
In Stock
Applicable Model:
For HOWO MAX、HOWO T7H、HOWO TH7、HOWO TX/SITRAK C7H、G7S
Package:
Customer Requirements/neutral Packaging/brand Packaging
Payment:
T/T,,Alipay
Purpose:
For Replace/repair
Product Name:
Manual Synchronizer Gearbox Assembly
Warranty:
6 Months
Material:
High-Strength Die-Cast Aluminum Alloy Housing
Highlight:

Sinotruk HOWO 12-speed manual transmission

,

HW25712XSTL sync gearbox assembly

,

Heavy truck transmission parts

Product Description


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
SINOTRUK HOWO HW25712XSTL 12-Speed Manual Sync Gearbox Transmission Assembly Heavy Truck PartsSINOTRUK HOWO HW25712XSTL 12-Speed Manual Sync Gearbox Transmission Assembly Heavy Truck Parts


Ordering & Shipping Information
Packing Options
Carton, Wooden Box, Pallet
Shipping Methods
Courier / Air Freight / Sea Freight
Payment Terms
L/C, T/T, , PayPal, , Alipay
Loading Port
Any Port in China

FAQ


Q1:What is the advantage of a synchronizer gearbox?

The synchronizer mechanism helps match gear speeds during shifting, making gear engagement smoother and reducing shifting difficulty.




Q2:What causes gearbox abnormal noise?

Possible causes include:

  • Insufficient transmission oil
  • Gear wear
  • Bearing wear
  • Synchronizer damage
  • Internal component clearance changes




Q3: What maintenance does a gearbox need?

Regular maintenance includes:

  • Checking transmission oil level
  • Using suitable gear oil
  • Inspecting oil leakage
  • Checking shifting performance


Tags: 

Front Axle Shock Absorber,  

Howo Truck Spare Parts,  

Clutch Cover Assembly

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Products
PRODUCTS DETAILS
Products

Shacman Truck Spare Parts

Truck Transmission Parts

Truck Engine Parts

Truck Cabin Parts

Truck Brake Parts

Truck Steering Parts

Truck Electrical Parts

Truck Chassis Parts

Sinotruk HOWO Truck Parts

FAW Truck Spare Parts

Dongfeng Truck Spare Parts

Yutong Bus Parts

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SANY Spare Parts

YUCHAI Spare Parts

CUMMINS Spare Parts

Foton Truck Spare Parts
SINOTRUK HOWO HW25712XSTL 12-Speed Manual Sync Gearbox Transmission Assembly Heavy Truck Parts
  • name
  • name
  • name
SINOTRUK HOWO HW25712XSTL 12-Speed Manual Sync Gearbox Transmission Assembly Heavy Truck Parts
MOQ: 1PCS
Price: negotiation
Standard Packaging: Unified cardboard, packaging with bubble wrap inside and wrapped with film outside. Large items can be palletized or packaged according to customer needs
Delivery Period: 3-5days
Payment Method: L/C,D/A,D/P,T/T
Supply Capacity: 500PCS
Detail Information
Product Description
Detail Information
Place of Origin
China
Brand Name
SINOTRUK
Certification
CQC URS CE
Model Number
HW25712XSTL
Shipping:
Courier/Air Freight/Sea Freight Or According To Customer Requirements
Service:
24 Hours Online Service
Availability:
In Stock
Applicable Model:
For HOWO MAX、HOWO T7H、HOWO TH7、HOWO TX/SITRAK C7H、G7S
Package:
Customer Requirements/neutral Packaging/brand Packaging
Payment:
T/T,,Alipay
Purpose:
For Replace/repair
Product Name:
Manual Synchronizer Gearbox Assembly
Warranty:
6 Months
Material:
High-Strength Die-Cast Aluminum Alloy Housing
Minimum Order Quantity:
1PCS
Price:
negotiation
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
Delivery Time:
3-5days
Payment Terms:
L/C,D/A,D/P,T/T
Supply Ability:
500PCS
Highlight

Sinotruk HOWO 12-speed manual transmission

,

HW25712XSTL sync gearbox assembly

,

Heavy truck transmission parts

Product Description


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
SINOTRUK HOWO HW25712XSTL 12-Speed Manual Sync Gearbox Transmission Assembly Heavy Truck PartsSINOTRUK HOWO HW25712XSTL 12-Speed Manual Sync Gearbox Transmission Assembly Heavy Truck Parts


Ordering & Shipping Information
Packing Options
Carton, Wooden Box, Pallet
Shipping Methods
Courier / Air Freight / Sea Freight
Payment Terms
L/C, T/T, , PayPal, , Alipay
Loading Port
Any Port in China

FAQ


Q1:What is the advantage of a synchronizer gearbox?

The synchronizer mechanism helps match gear speeds during shifting, making gear engagement smoother and reducing shifting difficulty.




Q2:What causes gearbox abnormal noise?

Possible causes include:

  • Insufficient transmission oil
  • Gear wear
  • Bearing wear
  • Synchronizer damage
  • Internal component clearance changes




Q3: What maintenance does a gearbox need?

Regular maintenance includes:

  • Checking transmission oil level
  • Using suitable gear oil
  • Inspecting oil leakage
  • Checking shifting performance


Tags: 

Front Axle Shock Absorber,

Howo Truck Spare Parts,

Clutch Cover Assembly

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