Allison Transmission

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Allison Transmission Distributor and Service Center in California

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. They started out 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. Our highly skilled and factory trained Valley sales, service, and parts specialists are here to provide superior support for all your transmission needs through a network of full services facilities.

Skilled Allison Transmission Technicians

Our highly skilled and factory trained Valley sales, service, and parts specialists are here to provide superior support for all your transmission needs through a network of full services facilities.

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

Allison ReTran®

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.

Contact Valley Power Systems in California

Sales:    (800) 924-4265

Email:   inquiries@valleypsi.com

For technical information visit:

Allison Transmission website