Allison Transmission

AllisonTransHorz_4C - NO Backround copy

Allison Transmission is the largest designer, developer, manufacturer and distributor of medium- and heavy-duty fully automatic transmissions and hybrid propulsion systems in the world. Allison began building race cars, evolved to developing aircraft engines and then introduced the world to heavy-duty automatic transmissions.

Valley Power Systems carries a complete line of new and remanufactured transmissions under the Allison ReTran®  and Valleybuilt™ brands.  Through a network of full-service facilities, Valley’s sales, service, and parts specialists are highly skilled and factory trained to provide superior support for all your transmission needs.

Allison Transmissions can be found at work in cities and rural areas around the world in a wide variety of applications including:


  • Construction
  • Fire Rescue
  • Medium- and Heavy-Duty Trucking
  • Public Transit
  • Refuse
  • School buses


Valley carries a complete line of automatic transmissions built to deliver a longer lifespan and a higher performance standard, at a consistent lower overall cost.



The Allison ReTran® automatic transmissions are meticulously remanufactured to precise factory tolerances using only genuine Allison parts. Factory-trained technicians using Allison-approved technologies and manufacturing processes literally remake a genuine Allison Transmission from the ground up. Genuine Allison ReTran® transmissions come with a two-year, unlimited mile worldwide warranty.


For more information, contact us at:

Sales:    (800) 924-4265



For technical information visit:

Allison Transmission website