WOOD DALE, Ill., Feb. 25, 2014 (GLOBE NEWSWIRE) -- Power Solutions International, Inc. (PSI) (Nasdaq:PSIX), a leader in the design, engineering and manufacture of emissions-certified alternative-fuel and conventional power systems announced today that it has been named "Customer of the Year, North America" by Doosan Infracore Co., Ltd, the worldwide construction and utility equipment manufacturer headquartered in Seoul, South Korea.

Doosan Infracore presented the award during the recent Middle East Electricity Exhibition in Dubai, the energy industry trade fair that took place February 11-13. Middle East Electricity hosts global energy leaders and innovators and is rated by visitors and exhibitors as the leading energy event of its kind in the world.

"PSI is very proud to be recognized in this way by an industry leader like Doosan Infracore," said PSI's Vice President of Advanced Product Development, Don Wilkins. "'Customer of the Year' is the highest honor that a company can receive from a world-class manufacturer in Korea."

Doosan Infracore supports the PSI Heavy-Duty engine portfolio with diesel engine blocks that PSI gasifies for alternative-fuel capabilities. PSI equips the heavy-duty engines with value-added solutions specifically designed to deliver the performance and reliability necessary for demanding applications in the power generation and oil and gas sectors. PSI's Heavy-Duty portfolio includes fuel-flexible engines ranging from 8.1-liter to 21.9-liter blocks, with expanded outputs spanning from 80 kWe to 430 kWe.

Since creating the Heavy-Duty family in 2008 to meet industrial demand for certified, alternative-fuel power systems, PSI has experienced significant sales growth for that engine line.

According to Dan Rim, Sr. Vice President of Sales & Marketing Doosan Infracore, "Doosan presents this award each year to honor customers that have delivered 'Exceptional Sales Performance and Outstanding Sales Achievement.'" He noted that the award recognizes PSI for its "hard work, dedication and enthusiasm."

For more information on PSI and its Heavy-Duty engine portfolio, visit http://www.psiengines.com.

About Power Solutions International, Inc.

Power Solutions International, Inc. (PSI) is a leader in the design, engineering and manufacture of emissions-certified, alternative-fuel power systems. PSI provides integrated turnkey solutions to leading global original equipment manufacturers in the industrial and on-road markets. The company's unique in-house design, prototyping, engineering and testing capacities allows PSI to customize clean, high-performance engines that run on a wide variety of fuels including natural gas, propane, biogas, diesel and gasoline.

PSI develops and delivers complete .97 to 22-liters power systems, including the 8.8-liter engine aimed at the industrial and on-road markets, including: medium duty fleets, delivery trucks, school buses and garbage/refuse trucks. PSI power systems are currently used worldwide in power generators, forklifts, aerial lifts, and industrial sweepers, as well as in oil and gas, aircraft ground support, agricultural and construction equipment.

CONTACT: Jeremy Lessaris

         Global Director of Marketing & Communications

         Power Solutions International

         1.630.350.9400

         jlessaris@psiengines.com

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