Photo Release -- PSI Announces Successful 4.3L LP Engine Program for Hyundai Forklifts

Photo Release -- PSI Announces Successful 4.3L LP Engine Program for Hyundai
Forklifts

WOOD DALE, Ill., April 26, 2013 (GLOBE NEWSWIRE) -- Clean technology engine
supplier Power Solutions International, Inc. ("PSI") (OTCBB:PSIX) today
announced successful results for its Tier IV diesel engine replacement program
with Hyundai Heavy Industries Co., Ltd. PSI supplies Hyundai with 4.3-liter
liquid propane engines for its 7A series 60/70L LPG forklift trucks,
supporting production at Hyundai's manufacturing facility in Ulsan, South
Korea.

The PSI 4.3-liter liquid propane engine

A photo accompanying this release is available at
http://www.globenewswire.com/newsroom/prs/?pkgid=18367

"PSI is delighted to work with Hyundai to power their 7A LPG forklifts," said
Gary Winemaster, Chief Executive Officer of PSI. "The project is helping us
build a stronger supply partnership with Hyundai, and also serves as an
excellent demonstration of how well our propane industrial engines outperform
other options in terms of power and torque."

The PSI 4.3-liter LP engine delivers 118 horsepower and 240 ft-lbs of torque
at 2,600 rpm when running on liquid propane fuel. The high-output engine
offers end-users greater acceleration, better gradability, and fast travel
speeds on tough terrains and slopes. PSI's fuel and emission control system
meets all EPA and CARB emission regulations for large spark-ignited (LSI)
engines.

"Customers expect our Series 7A forklifts to provide strong acceleration and
powerful torque in combination with excellent fuel economy and durability,"
said Tim Webb, Manager, Product Development, Hyundai Construction Equipment,
Americas. "PSI's 4.3-liter engine meets all of our performance demands in a
cost-effective, emission-compliant package that is helping us gain market
share."

"The forklift market has been one of PSI's fastest growing segments in recent
years, as OEMs continue to shift to cost-competitive, emission-compliant
liquid propane engines. As a result, PSI's forklift engines sales nearly
tripled in the last two years," said Jeremy Lessaris, Director of Marketing at
PSI.

Propane engines now represent between 80% and 90% of the internal combustion
forklift lift market—over 670,000 engines in the US according to the Propane
Education & Research Council (PERC). Forklift users have shifted to
propane-fueled equipment due to lower costs, operational advantages, and
reduced emissions, particularly since Tier IV diesel emission regulations went
into effect. Compared to diesel engines, propane-powered forklifts generally
have lower life-cycle costs for both maintenance and fuel-related expenses.
Operationally, propane offers greater convenience in refueling, ease of
storage, greater safety, and indoor/outdoor-use flexibility. Propane-powered
forklifts also provide consistent 100%-power throughout operations, as well as
faster ground speeds compared to electric vehicles.

About PSI

Power Solutions International (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, off- and on-road markets. The company's
unique in-house design, prototyping, engineering and testing capacities allow
PSI to customize clean, high-performance engines that run on a wide variety of
fuels including natural gas, propane, biogas, and gasoline.

PSI develops and delivers complete power systems ranging from .97-liter to
22-liters of displacement, including the 8.8-liter engine aimed at industrial
and on-highway markets such as medium-duty fleets, delivery trucks, school
buses, and 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.

For more information on PSI, visit http://www.psiengines.com.

CONTACT: Jeremy Lessaris
         Director of Marketing
         Power Solutions International
         Mobile:  1.630.350.9400
         E-mail: jlessaris@psiengines.com
 
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