Allegiance Trucks and Ascendance Truck Centers teams are committed to delivering an industry-leading customer experience. Achieving this goal requires a seamless partnership with strategic suppliers like you to ensure our mutual customers’ uptime by having the right parts on our shelves, at the right cost, sold at competitive market prices, and delivered precisely when needed. To drive even greater success for our customers, we are excited to introduce the Diamond Partners Program. We are confident that the Diamond Partners Program will create a significant impact on our collective growth throughout 2025. Our focus remains on building an effective network of parts, service, leasing, and wholesale locations.
We are very excited to announce the 2025 Diamond Partners:
- Weller
- Shell
- Fleetguard
We encourage you to learn about our Diamond Partners by clicking on their brands below. If you are interested in becoming a Diamond Partners, please contact me via the email address at the bottom of the note. We look forward to collaborating with all of our partners in 2025 and fostering a lasting, impactful partnership.
Regards,

Weller
Weller Truck Parts is the nation’s leading remanufacturer of all-makes drivetrain components for heavy-duty vehicles, with 40+ locations and 20,000 units in stock, delivering unmatched quality, availability, and support.
Fleetguard
More than filtration, Fleetguard products provide solutions for your equipment needs, arming you with the superior technology you can depend on. Backed by 66 years of innovation and expertise, Fleetguard provides the filtration science you can trust to keep you going.