Our parts perform like they are supposed to, in form, fit, function, composition, and durability.
Our parts have been used in both on and off-highway Allison Transmissions since 1984, operating in over 50 countries, on all 7 continents.
All of our parts are thoroughly inspected.
We design; engineer, reverse engineer, and dynamometer test our parts, so we know how they are supposed to perform and function, unlike the big “boxing” companies.
We warranty our parts and services.
We stock over 10,000 parts ready to ship.
The most options in the business. Depending on your situation and budget, we can offer....
Performance Aftermarket (1000PK/GM/Duramax)
New Allison OEM
Good Used Parts
Surplus New Parts
ReNewed Allison Transmissions
Performance Upgraded Allison Transmissions. (1000PK/GM/Duramax)
Easy online ordering and tracking of orders.
A friendly, knowledgeable, service oriented customer service staff to help you.
The fastest quote response system in the industry.
Experience & Know How
Xcalliber has been servicing the Allison Transmission industry since 1984.
We have engineers, technicians, and service reps. that have been working in the Allison Industry for over 30 years.
The most competitive pricing on parts, services, and transmissions in the Allison Industry
The most competitive rates on both domestic and international freight.