ZF5S408 Countershaft Teeth 1333 303 050
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ZF5S408 Countershaft Teeth 1333 303 050

1333 303 050 is the ZF original countershaft gear for ZF Ecolite ZF5S408 5-speed light/medium truck manual transmission, widely used on Foton Aumark and other medium commercial vehicles. It is a precision hardened alloy steel gear fixed on the countershaft (lay shaft), responsible for transmitting torque and changing gear ratios to realize different forward speed gears. It forms the core constant mesh gear set, ensuring stable power transmission, reducing abnormal noise and premature gear damage, and is a key overhaul spare part for the ZF5S408 gearbox.
Availability:
Quantity:
  • 1333 303 050

  • ZF

Product parameters

Basic Info

      • OE Part No.: 1333 303 050 (1333303050)
        • Brand: ZF (Ecolite 5S408 series)

        • Product Type: Countershaft Gear / Lay Shaft Gear

        • Compatible Gearbox: ZF 5S408 (Ecolite 5-speed manual transmission)

        • Applicable Vehicles: Foton Aumark and other medium-duty commercial vehicles with ZF5S408 gearboxes

        • Material: High-strength carburized alloy steel, precision machined & heat-treated teeth

        • Product Weight: approx 2.2kg (reference value)

        • Function: Torque transmission, gear ratio conversion, form the intermediate reduction gear train of the 5-speed manual gearbox

        • Category: ZF Ecolite 5S408 Medium Truck Gearbox Internal Gear Spare Parts


  • Material & Advantages


  1. Carburized hardened alloy steel, high surface hardness, wear-resistant and impact-resistant under medium-load daily driving

  2. Precision tooth profile machining, reduce meshing noise and vibration, maintain stable gear meshing

  3. Standard OEM dimensions and spline structure, direct fit replacement for gearbox overhaul

  4. Solve abnormal gear noise, jitter, gear tooth pitting/chipping and accelerated wear faults

  5. Adapt to medium-duty urban and highway transport working conditions



Application


  • For ZF5S408 5-speed medium truck gearbox overhaul and maintenance:
    • Replace when gear teeth are pitted, chipped, worn, burnt, or symptoms include persistent gear whine, vibration, shifting jitter

    • Inspect the full countershaft assembly, bearings, synchronizer parts and main shaft gears together during overhaul

    • Use specified ZF manual transmission gear oil, check oil cleanliness and oil level

    • Reassemble with correct bearing preload and gear backlash, test drive to confirm no abnormal noise

    • Avoid continuous overloading and overdue oil changes to extend gear service life



Origin & Lead Time

In stock, delivery within 1–3 working days; bulk orders: 4–7 days; sea freight: 10–24 days


MOQ & Packing

MOQ: 1 piece
Warranty: 6 months, not covered for improper programming, water damage, overvoltage and unauthorized circuit modification
Packing: Anti-static bag + shockproof foam + reinforced export carton

About yongliwei

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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.

Company information (1)

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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* 8000 square meters of large warehouse.

* A number of maritime, land, air transport international logistics companies work closely together.

* To provide you with convenient, fast and low-cost e-commerce one-stop service.


About Us
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