Taco Pro Fit BRG-D-100 Bearing Assembly. Taco's in-line circulator line Pro Fit is an efficient and cost effective replacement to Armstrong and Bell and Gossett's line of circulators. This bracket can replace the Bell and Gossett PD-35, PD-37, 60-11,60-2, 60-13, 60-14 bearing assembly part number 186863, 186864. It also can replace the Armstrong bearing assemble for their S-55, S-57, H-51, H-52, H-53, H-54 pump or part number 816032-000.