Allison Transmissions

Weller Reman Center is an Allison Authorized Rebuilder, bringing you 100% genuine parts. All 1k/2k units have new genuine Allison Torque Converters. Every unit is dyno tested and our valve bodies are quality remanufactured and matched to the original units. Priced for the best value with unmatched availability and quality remanufacturing by experts in Allison transmissions, why buy anywhere else?  

  • Assembled with 100% Genuine Allison® parts
  • Built serial number specific to ensure correct application
  • 100% dyno tested with the latest electronics and equipment
  • Manufacturers updates included as needed
  • New Genuine Allison® torque convertors on all 1K and 2K models
  • Owners manual with installation and adjustment instructions included


Quality Products backed by The Weller Way


Incoming core are diassembled and every part is inspected to look for failures which are recorded in our system before being sent to the wash station for cleaning and remanufacturing prep.


Each valve body is tested electronically in real world scenarios that simulate shift timing, shift points, shift pressures, and cooler flow in order to check for resistance on each solenoid.  Once tested, the valve bodies go to our remanufacturing cells to be installed.  All parts are properly cleaned, inspected, and organized for the remanufacturing process so we can build your units efficiently.


Once remanufacturing is complete, every Allison unit goes through our hydrotest. The unit is plugged and air pressure is applied to test for any external leaks.  It is then ran on the dyno at operating temperature to test clutch pressure, main pressure, and cooler flow to ensure each transmission is shifting properly and according to original equipment specifications before it leaves the building.

Allison World products are tested using the Allison TCM to ensure each unit meets Allison test specifications.

Shop our extensive inventory now!

On-highway and Off-highway Transmissions

Our most popular models are the 3000, 4500, AT545, 5300RDS, and the MT600, but we remanufacture all of the following:

  • AT Series
  • MT Series
  • HT Series
  • 1000-2000 Product Families
  • 3000-4000 Product Families
  • 5000 Series
  • 6000 Series
  • 8000 Series
  • 9000 Series

We are proud to offer the following warranties on our Allison units!

  • Two years, unlimited miles on On-Highway applications
  • Six month warranty on Off-Highway applications

In addition to Allison Transmissions®, Weller offers a variety of other Automatic options including Clark, Funk, CAT, and ZF

Industrial Transmissions

Industrial Transmissions

Quality Remanufactured Products by WELLER for the Following Applications
All units are tested for performance and quality.

Allison® • Caterpillar • Clark • Funk •  ZF

Transfer Cases and Auxilaries

Quality Remanufactured Products by WELLER for the Following Applications
All units are tested for performance and quality.

Cotta • Cushman • Oshkosh • MPM •  Noster • Spicer • Meritor • Eaton • Fabco • Timberjack • ZF • Mack

Mixer Drives

Quality Remanufactured Products by WELLER for the Following Applications
All units are tested for performance and quality.

PK4100 • PK5300 • PK6500 • PK7500


Weller offers Nationwide Coverage for all makes and models with Same Day shipping and delivery. Priced for the best value with our outstanding availability and quality remanufacturing by experts in industrial transmissions. Call for immediate availability and custom remanufacturing!

  • Dump Trucks
  • Graders
  • Mixers
  • Oil Rigs
  • Cranes
  • And More!

More Reasons to Choose Weller Truck Parts

We love being part of your community. WELLER has local sales and support agents that know the product and, just as important, our customer. We offer support before the sale and will stay with you after the sale to ensure your satisfaction. When you call the Weller store nearest you, you are speaking to a sales or support agent in your area. He or she knows the area in which you or your customer are driving their truck. They know the weather, they know the terrain, and they know you can’t afford to have a truck down. WELLER’s local agents are on your side and will do everything they can to get you or your customer back on the road as quickly as possible.
We’ll get your product to you as soon as we can via our fleet of delivery vehicles. Our goal is always your complete satisfaction with our product as well as our service. Part of reaching that goal is fast local delivery. In addition, we will pick up the core at no charge to you.

There’s no need for you or your customer to have money sitting on a shelf as an unused part. Our Unit Down Service allows you to focus on your business; WELLER will focus on stocking the product you need and getting it to you quickly. WELLER can get our product to you or your repair facility in less time than any other remanufacturer in the country. Our goal is less down time for you – Same day/Next day. With 34 locations to serve you across the United States, WELLER can be your parts warehouse.

We’ve built our reputation on Service & Quality. WELLER seeks to remanufacture every part of your driveline perfectly. We do, however, live in an imperfect world. If you do have a problem with one of our parts we absolutely stand behind our product and will work with you to find a resolution. What’s more, our technical support is available to customers and non-customers alike. We understand the challenge of accurately diagnosing a failure and the cost involved.  After all, the longer you are down the more you lose money. For these reasons, WELLER offers an accurate technical diagnosis on all product lines regardless of the place of purchase. If they won’t take care of you, WELLER will.
WELLER has the largest Inventory in North America and includes all makes and models, not just the most common movers.
Our extensive distribution, large inventory, local sales and support, delivery and pickup, and technical support makes doing business with WELLER easy.
We ship 99% of our sales same day. As always, our goal is less down time for you, so shipping same day gets you or your customer back on the road sooner. It’s just another way that WELLER strives to exceed your expectations.

Attention California Residents: WARNING: Cancer and Reproductive Harm –