Complete Service for Your Heavy Duty Transmissions and Torque Converters
The Catalyst Powertrain Off Highway division specializes in overhauling or repairing transmissions and torque converters. Our sales and service staff are dedicated to quickly diagnosing the issue, providing options, and getting your transmission re-manufactured and running in a timely manner.


We are Your Allison Transmission Authorized Parts Dealer and Certified Technicians
Allison Transmission CRT 3331/CRT 3531
Certified Retran – We are Allison certified repair specialists.

Allison Transmission TT TRT 4000 Series

Allison Transmission 5000 / 6000 Series

For over 35 years, Catalyst Powertrain has focused on customer service and product quality.
This commitment has helped the overhaul shop develop strict rebuild/remanufacturing guidelines that keep your drivetrain working properly.
From the initial inspection to product shipment, we engage in processes and procedures that increase technician production and product quality while reducing your costs.
Communication throughout the sales process allows owners, service managers, and purchasing agents to focus other facets of the business.
Catalyst Powertrain has the professionals in place to get your Off-Highway transmissions and torque converters operating properly.
Call Us Today (800) 872-6691 in Washington or (503) 286-0360
We have thousands of parts in stock. If you cannot find a part listed in our online parts catalog, please contact us.
