Alfdex
Alfdex is a Swedish industrial brand supplying crankcase ventilation and oil-separation technology for commercial vehicles and diesel engines.
Last updated August 31, 2026
Overview
Alfdex is a Swedish industrial technology brand focused on crankcase ventilation and oil-separation systems for diesel engines. Its equipment processes crankcase gases generated during engine operation, separating oil mist and enabling the treated gas to be returned to the intake system or handled through an appropriate emissions route. The technology is primarily associated with heavy commercial vehicles, including trucks and buses, as well as other diesel-powered equipment. Alfdex has ownership and business links with Alfa Laval and Haldex and operates as a specialist supplier in the automotive components and engine-emissions-control sector. Publicly verifiable information about its exact founding date, product models, sales scale, and customer list is limited, so those details are not expanded here.
History
Alfdex focuses on crankcase ventilation and oil-separation technology for diesel engines, with primary applications in heavy commercial vehicles and related engine systems. Its technical approach separates oil mist from crankcase gases, allowing recovered oil to be returned to the lubrication system while reducing contamination of the engine intake system. Public information indicates ownership and business links with Alfa Laval and Haldex. However, without sufficient reliable primary sources, a complete chronology of its founding, management history, major product-generation changes, and market expansion cannot be established.
Products and positioning
Specialist supplier of engine emission control and oil mist separation technology for heavy-duty commercial vehicle and diesel engine manufacturers.
Crankcase ventilation systemsEngine emission control and ventilation systems
Systems that process diesel-engine crankcase gases and separate oil mist, helping reduce oil carryover into the intake system while supporting emissions control and lubricant management. They are primarily intended for heavy commercial vehicles and other diesel-powered applications.
Oil separatorsEngine components
Engine components designed to separate oil from crankcase gases and serving as a core part of Alfdex technology. They help reduce oil-mist emissions, limit intake-system contamination, and support recovery of separated lubricant.
Flagship businesses
- Diesel engine crankcase ventilation and oil mist separation solutions
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