Armstrong 875001-800 Packaged Coupler Insert - 3JE

The Armstrong 875001-800 is a 3JE packaged coupler insert designed specifically for Armstrong Series 4030 and 4020 horizontal end-suction base-mounted pumps. This genuine OEM replacement component features a Woods-style flexible insert design that provides reliable power transmission between the pump and motor while accommodating minor misalignment.

Key Features:

• 3JE size coupler insert for precise fitment
• Woods-style flexible insert construction for vibration dampening
• Engineered for Armstrong 4030 and 4020 series base-mounted pumps
• Packaged assembly for easy installation and replacement
• Genuine Armstrong Fluid Technology OEM part

This coupler insert is an essential maintenance component that helps protect pump and motor bearings from excessive wear by absorbing shock loads and minor shaft misalignment. Regular inspection and replacement of coupler inserts ensures optimal pump performance and extends equipment service life in commercial HVAC and industrial pumping applications.