Bell & Gossett 186874 is a replacement pump coupler designed for Series 60 in-line centrifugal pumps. This flexible coupler connects the motor shaft to the pump shaft, transmitting torque while accommodating minor misalignment. It is a genuine OEM part for Bell & Gossett hydronic HVAC circulators.

Bell & Gossett 1-1/4" x 1-5/8" complete coupler for Series 1510 pumps with 20 HP motors and 256T frames, as well as, 40 HP motors and 286TS frames. A broken coupler indicates that the motor mounts have lost their resiliency and the motor shaft and pump shaft are now out of alignment. It is recommended to replace the motor mounts when the pump coupling breaks.