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Unified cardboard, packaging with bubble wrap inside and wrapped with film outside. Large items can be palletized or packaged according to customer needs
Unified cardboard, packaging with bubble wrap inside and wrapped with film outside. Large items can be palletized or packaged according to customer needs
Manual Transmission System Spare Parts SHACMAN X3000 FAST 12JSDX240 Gearbox Assembly
The FAST 12JSDX240 Gearbox Assembly is a 12-speed manual transmission designed for heavy-duty truck powertrain applications and belongs to the manual transmission system. With a rated input torque of 2400 N·m, the gearbox is designed to transfer engine power to the driveline while providing multiple gear ratios for different operating conditions. Its 12 forward speeds allow the truck to maintain a suitable engine operating range during starting, heavy-load acceleration, climbing, highway driving, and changing road conditions, while the two reverse ratios provide additional flexibility during low-speed maneuvering. The standard 12JSDX240 configuration has an installation length of approximately 983.5 mm, a maximum input speed of 2600 rpm, and a reference oil capacity of approximately 16.5 L. During actual vehicle operation, transmission performance depends on correct clutch adjustment, suitable lubricant, proper shift operation, and the condition of internal gears, shafts, bearings, and synchronizers. Difficult gear selection, gear jumping, abnormal transmission noise, vibration, oil leakage, or changes in shifting behavior can indicate that the gearbox requires inspection. When replacing the complete 12JSDX240 transmission assembly, buyers should verify the transmission model, input/output interface, clutch housing, PTO configuration, shift mechanism, mounting dimensions, and vehicle application before purchase. This is particularly important because FAST offers several visually similar 12-speed transmission models, including 12JSDX240A, 12JSDX240T, 12JSDX240TA, and 12JSDX240K/260K, but their specifications and configurations are not identical.
Product Specification
Product Name
12JSDX240 Manual Transmission Assembly
Transmission Model
12JSDX240
Transmission Series
JSD200 / JSD220
Condition
New
Origin
China
Quality Standard
100% Tested
Quality Certification
ISO, CCC, GSO, CE, SGS, TUV
Weight
288.0 KG
Dimensions
990 mm × 550 mm × 380 mm
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 are common signs that a truck gearbox needs inspection?
Common indications includedifficulty shifting, gear jumping, abnormal mechanical noise, excessive vibration, oil leakage, or changes in gear engagement. The clutch, shift mechanism, and driveline should also be checked because similar symptoms can originate outside the gearbox.
Q2:Why can a manual transmission make abnormal noise?
Possible causes include worn bearings, damaged gears, incorrect lubrication, excessive shaft clearance, synchronizer wear, or problems with the driveline. The transmission should be inspected systematically rather than replacing the complete assembly based only on noise.
Q3: What is important when installing a replacement gearbox?
Confirm mounting alignment, clutch compatibility, input shaft engagement, output connection, oil level, shift linkage, and PTO configuration. After installation, verify gear engagement and check for abnormal noise or leakage before placing the truck under heavy operating load.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
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...