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1333 304 046
ZF

OE Part No.: 1333 304 046 (1333304046)
Brand: ZF (Ecolite 5S400V series)
Product Type: 5th & Reverse Gear Synchronizer Assembly
Compatible Gearbox: ZF5S400V 5-speed medium-duty manual transmission
Applicable Vehicles: Foton Aumark and other medium-duty commercial vehicles with ZF5S400V gearboxes
Material: High-strength alloy steel hub & sleeve, brass synchronizer rings, spring steel
Product Weight: approx 4.0kg (reference value, actual weight subject to specific part number version)
Function: Speed synchronization for 5th gear and reverse gear shifting, reduce shift impact, prevent gear damage and abnormal noise
Category: ZF Ecolite 5S400V Medium Truck Gearbox Internal Synchronizer Spare Parts
Material & Advantages
Hardened alloy steel hub and sleeve + brass friction synchronizer rings, good friction performance and wear resistance for high-speed and reverse shifting cycles
Precision spline structure, perfect matching with main shaft, stable operation and reduced abnormal noise
Standard OEM dimensions for direct fit replacement during gearbox overhaul
Fix hard shifting, reverse gear grinding noise and premature synchronizer failure
Adapted to urban logistics and medium-distance highway transport working conditions
Application
Replace when shifting is stiff, 5th/reverse gear has grinding noise, synchronizer rings are worn/burnt or reverse gear slips
Overhaul the whole main shaft assembly, check bearings, shift forks and adjacent gears together
Use specified ZF manual transmission gear oil, keep oil clean and at proper level
Reassemble correctly, check shift clearance and test drive to confirm smooth 5th and reverse gear shifting
Avoid frequent aggressive reverse shifting and continuous overloading to extend synchronizer life


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.

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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