BorgWarner Thermal Systems has introduced the X Series engine fans, which provide improved efficiency and performance, in spite of their lightweight construction and package size.

According to BorgWarner, the XMD9 and XD11 models (9 and 11 fan blades, respectively) can increase cooling capacity by as much as 4 deg. F at a 7% higher efficiency.

The hubless design offers blade aerodynamics designed for heavy-duty cooling systems. Fans have been optimized for performance and packaging compatibility with the BorgWarner family of heavy-duty fan drives, and meet the cooling performance required for U.S. 2007 and Euro 5 engines.