Description
The Armstrong Fluid Technology 110108MF-397 is a complete OEM replacement bearing assembly engineered to bring your Armstrong pump back to factory performance. By combining the bearing assembly, coupler, and impeller into a single, ready-to-install service kit, this assembly eliminates guesswork during maintenance — ensuring every critical rotating component is replaced together for optimal alignment, efficiency, and longevity.
Designed specifically for compatible Armstrong pump systems used in commercial HVAC and hydronic circulation applications, this integrated assembly restores proper shaft support, smooth power transfer from motor to pump, and full hydraulic output. Whether you’re addressing worn bearings, a damaged coupler, or a degraded impeller, this all-in-one kit streamlines the repair process and helps get your system back online faster.
Key Features
- Complete OEM kit including bearing assembly, coupler, and impeller for a true like-for-like replacement
- Restores proper shaft alignment and smooth, vibration-free rotation
- Coupler ensures efficient, reliable power transfer from the motor to pump internals
- Replacement impeller brings hydraulic performance back to original design specifications
- Engineered for commercial HVAC and hydronic circulation systems
- Simplifies maintenance by consolidating critical rotating components into a single service part







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