All allison 4000 series Articles

Allison 4000 Series transmission now available with CARB-compliant Paccar MX-13 engine
Allison said it is the only fully automatic transmission available with the MX-13 engine that is CARB-compliant.
Cement hauler puts natural gas combo to the test
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Sandman field tests Peterbilt tractor with Cummins natural gas engine and Allison fully automatic transmission