REPAIR, REPLACE, OR UPGRADE
Allison Transmission Parts
For GM Duramax Trucks | Since 1984, Xcalliber has been a trusted manufacturer and supplier of Allison transmission parts, serving GM Duramax truck owners, transmission shops, fleets, and commercial operators across the globe. Many of our parts are designed and built in-house at our Brookfield, Connecticut, facility, and all are engineered to meet the demands of everything from pickups to heavy-duty commercial vehicles. Our lineup of parts for Allison Transmissions spans the full spectrum: stock replacement components, billet performance upgrades, rebuild kits, torque converters, valve bodies, clutches, filters, sensors, solenoids, and more. Every renewed Allison transmission we ship is dyno-tested before leaving our facility, giving you confidence in every build. Whether you need Allison gearbox parts for a mild street truck or an 800+ HP performance build, Xcalliber has the depth of inventory and the Allison-specific expertise to back it up. | For Commercial Vehicles |
Since 1984, Xcalliber has been a trusted manufacturer and supplier of Allison transmission parts, serving GM Duramax truck owners, transmission shops, fleets, and commercial operators across the globe. Many of our parts are designed and built in-house at our Brookfield, Connecticut, facility, and all are engineered to meet the demands of everything from pickups to heavy-duty commercial vehicles. Our lineup of parts for Allison Transmissions spans the full spectrum: stock replacement components, billet performance upgrades, rebuild kits, torque converters, valve bodies, clutches, filters, sensors, solenoids, and more. Every renewed Allison transmission we ship is dyno-tested before leaving our facility, giving you confidence in every build. Whether you need Allison gearbox parts for a mild street truck or an 800+ HP performance build, Xcalliber has the depth of inventory and the Allison-specific expertise to back it up. |
For GM Duramax Trucks For GM Duramax Trucks |
For Commercial Vehicles For Commercial Vehicles |
 Flywheels + Ring Gears |  Coolers + Cooler Kits |  T-Handle Shifters |
 Diagnostic Tools |  Manuals + Parts Catalogs |  Transmission Oil |
Manuals + Parts Catalogs | Transmission Oil |
T-Handle Shifters | Diagnostic Tools |
Flywheels + Ring Gears | Coolers + Cooler Kits |
For GM Duramax Trucks | |
ALLISON® 1000 Stock Parts 5 Speed + 6 Speed Performance Parts 5 Speed + 6 Speed Stock Transmissions 5 Speed + 6 Speed Performance-Upgraded 5 Speed + 6 Speed | ALLISON® 10L1000 Stock Parts 10 Speed Performance Parts 10 Speed Stock Transmissions 10 Speed |
For Commercial Vehicles | |
Parts | TRANSMISSIONS Built by our trained technicians, your renewed Allison® transmission is dynamometer tested and warranted so you can have confidence in your investment. To ensure optimal performance, your transmission includes new bushings, bearings, clutches, overhaul kit, electrical, filters, and the latest product updates. Free core return freight is offered in the contiguous United States for most orders. |
Stock Parts 5 Speed + 6 Speed Performance Parts 5 Speed + 6 Speed Stock Transmissions 5 Speed + 6 Speed Performance-Upgraded 5 Speed + 6 Speed |
Stock Parts 10 Speed Performance Parts 10 Speed Stock Transmissions 10 Speed Performance-Upgraded 10 Speed |
Built by our trained technicians, your renewed Allison® transmission is dynamometer tested and warranted so you can have confidence in your investment. To ensure optimal performance, your transmission includes new bushings, bearings, clutches, overhaul kit, electrical, filters, and the latest product updates. Free core return freight is offered in the contiguous United States for most orders. |
