American Power Group Corp., announced that its subsidiary, American Power Group Inc., has received online notification from the U.S. Environmental
Protection Agency that its recent Clean Alternative Fuel Vehicle and Engine Conversion Submission for an additional 22 engine families has been approved for the following additional Outside Useful Life (“OUL”) engines:

Cummins ISX (2009 - 2007)
Cummins ISM (2009 - 2007)
Caterpillar C-15 (1997 - 1996)
Caterpillar C-16 (1997)

The submission utilized APG’s latest V5000 Dual Fuel Turbocharged Natural Gas technology, which is required to meet specific design, componentry, and emission compliance criteria per the EPA Final Rule 40CFR Parts 85 and 86.

Lyle Jensen, American Power Group Corporation’s president and Ceo stated, “This round of approvals mark the completion of the Class 8 EPA OUL testing for the  Cummins and Detroit Diesel engine families for model years 2009 to 2002 and the  Caterpillar engine families from 2006 to 1996.

"Caterpillar exited the vehicular engine market after 2006. The EPA OUL testing for the Volvo and Mack engine families has begun and we anticipate testing and approvals to be completed within the next 60 to 90 days.

"Following that, we will wrap up our EPA OUL testing with selected engine models older than model year 2002 for the re-manufactured engine
conversion market and the International DT 466/MaxxForce engine series.

"Since May 2012, we have received approval on over one hundred EPA OUL engine families and anticipate having over 200 OUL engine families approved
when we complete this phase of testing later this spring which would open up an estimated domestic multi-billion dollar OUL addressable market of 500,000 vehicles.”

Jensen added, “We also have begun our EPA Intermediate Useful Life testing at the University of Houston Diesel Testing And Research Center for the lower mileage Class 8 trucks that utilize either the catalytic convertor or selective catalyst reduction emission technology.

"Progress is steady and we expect most of the popular IUL engine family approvals will be completed during the calendar year representing an estimated additional 400,000 potential vehicles for dual fuel conversion.”