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ZF 6AP series bus automatic transmission parts 4181 385 057
ZF 6AP series bus automatic transmission parts 4181 385 057
ZF 6AP series bus automatic transmission parts 4181 385 057

Thickened high-strength steel filter shell, anti-explosion under long-term 10–170bar hydraulic working pressure of frequent bus start-stop operation;
Dual-layer high-density glass fiber composite filter paper + stainless steel support mesh, double-stage purification, 6μm coarse impurity interception + 22μm fine filtration, high Beta filtration efficiency;
Built-in bypass pressure relief valve, automatically opens when filter clogging to cut off oil supply risk and avoid gearbox clutch burning loss;
Standard M22×1.5 spin-on mounting thread, integrated high temperature resistant nitrile rubber sealing ring, stable sealing within -35℃~115℃ ATF oil temperature range;
Inner surface anti-rust coating treatment, resistant to long-term erosion of high-temperature gear oil and humid bus maintenance storage environment;
Uniform flow channel layout inside filter element, low flow resistance, guarantee sufficient lubrication and hydraulic pressure during peak passenger loading;
Strict high-pressure explosion test, flow resistance detection and long-cycle continuous oil filtration fatigue test before delivery, reliable purification performance for all-day urban bus operation.


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.

* 8000 square meters of large warehouse.
* To provide you with convenient, fast and low-cost e-commerce one-stop service.
