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UD Trucks, Isuzu — recall

Automotive · Japan · 2026-05-14

Origin: 日本

UD Trucks Quon, Isuzu Giga variable displacement oil pump stator material durability insufficient

Country	Japan
Category	Automotive
Published	2026-05-14
Country of origin	日本
Manufacturer	UD Trucks Corporation
Models affected	Quon, Giga
Units affected	1634
Defect	In the variable displacement oil pump, due to insufficient durability verification of the material used for the stator (fixed part) of the variable section, repeated hydraulic pressure control according to driving conditions may cause damage and wear to the stator sliding surface of the housing cover. As a result, if use continues in this state, proper oil pressure cannot be maintained, leading to the display of an 'engine oil pressure low' warning message and the illumination of a warning light on the instrument cluster, along with restricted engine output. Furthermore, if driving continues …
Component	Engine (Oil Pump)
Remedy	For all affected vehicles, replace the oil pump with an improved part and modify the oil passage to the oil control valve.
Recall number	5816
Official notice	View source ↗

What this means for sellers

Likely platform / channel actions	OEMs/dealers will run the remedy (repair, replace or refund); component suppliers in the chain may face traceback.
Self-check for comparable products	Check your comparable products' design, materials and QC records against the defect described here.
Rules & standards likely involved	the destination market's product-safety rules and mandatory standards

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