Allison transmission earns certification from california air resources board for egen flex™ electric hybrid propulsion system

Indianapolis--(business wire)--allison transmission today announced it has received certification from the california air resources board (carb) for the model year 2022 egen flex™ electric hybrid propulsion system paired with cummins b6.7 and l9 engines. since 2014, allison has received annual certification from carb for the allison h 40/50 ep™ propulsion system. for the first time this year, the certification was awarded for the egen flex, the company's newest electric hybrid solution for tran
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