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A-5000 111 01 88 G5
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OE Part No.: A-5000 111 01 88 G5
Product Type: Gearbox Pneumatic Follow-up Valve / Splitter Slave Valve
Compatible Gearbox: FAST series heavy-duty manual transmissions
Applicable Vehicles: Domestic heavy trucks equipped with FAST multi-speed gearboxes
Material: Cast aluminum body + wear-resistant rubber sealing components
Product Weight: approx 0.8kg (reference value)
Function: Control auxiliary box high-low shift air circuit, synchronize air pressure and shift timing, ensure stable high-low gear conversion, prevent air leakage, reduce synchronizer wear
Category: FAST Heavy Truck Gearbox Pneumatic Shift Spare Parts
Material & Advantages
High-strength cast aluminum housing + aging-resistant rubber seals, good vibration resistance, suitable for heavy-duty long-distance truck working conditions
Precision internal valve structure, stable air pressure control, effectively fix air leakage, slow high-low shift and shift jamming faults
Standard OEM mounting dimensions and air ports, direct fit replacement during overhaul
Improve high-low gear shift response speed and accuracy, reduce auxiliary box synchronizer wear
Adapt to variable temperature, highway long haulage and complex mountain road heavy load conditions
Application
Replace when high/low gear shift is abnormal, slow, stuck, air leaks or cannot switch gears
Overhaul FAST gearbox top cover and auxiliary box pneumatic shift system
Inspect air pipelines, air filters and air pressure regulating valves together
Use clean and dry compressed air to extend internal seal service life
After installation, test high-low gear shift function and check air tightness
Follow correct air pressure parameters to avoid excessive pressure damage
Origin & Lead Tim
In stock, delivery within 1–3 working days; bulk orders: 4–7 days; sea freight: 10–24 days


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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