Allison Transmission

Penn Power Group is your Allison Authorized Distributor for Parts, Service, and Training. Unmatched reliability with lower maintenance costs.

For more than 100 years, Allison Transmission has continuously discovered new ways to make work easier and more efficient. Allison designs and builds fully automatic transmissions and hybrid propulsion systems that deliver premium performance with unrivaled reliability and durability, including intelligence to alert you of any issues occurring in your drivetrain. When you’re down, if you can’t get a quick diagnostic done, it increases your downtime.

Allison Authorized means more uptime & less maintenance costs

Penn Power Group is a proud partner of Allison Transmission. When you choose Penn, you’re choosing a one-stop-shop for all of your Allison needs. Penn provides parts, service and training for medium duty, trash/waste trucks, triaxle dump trucks, roll off decks, transit and school bus, coaches and hybrid.


  • We stock Allison ReTran®, Allison Approved Fluids, Allison Genuine Parts™ and filters

Shop Allison Transmission


  • Our factory trained and certified technicians are equipped with the latest technical information
  • We offer mobile service diagnostics and repairs
  • We’re authorized to perform warranty repairs and offer Extended Transmission Coverage (ETC)
  • Our locations are equipped with tools and equipment which have been designed specifically for your Allison Automatic
  • Take advantage of our fleet analysis and maintenance management programs 


  • We offer Allison-certified training programs that are designed to take a technician from beginner to expertise, including customized training for our customer needs.
  • Mobile Service Diagnostics and repairs
  • We can supply maintenance, authorized fluids, filters, and parts
  • Warranty repairs

An Allison Distributor You Can Trust

Penn’s factory certified technicians specialize in bus and coach, fire/emergency vehicles, motorhomes, vocational (pickup and delivery, construction, refuse), and public transportation.

Follow this simple plan to get your vehicle back on the road fast

  1. Report your issue to Penn

  2. We provide diagnostics & quick estimate

  3. We provide Service/Parts needed

  4. Get truck back on the road

Parts and Service for Allison Transmissions

Penn Power Group is your dealer for the world’s largest manufacturer of fully automatic transmissions for medium- and heavy-duty commercial vehicles, Allison Transmission.  Penn provides services and parts for medium duty, trash/waste trucks, triaxle dump trucks, roll off decks, transit and school bus, coaches, hybrid. 

Penn offers an Allison training program that is designed to take a technician from beginner to expertise.  We offer in depth training to our technicians and dealers and targeted training for our customer needs.