Taco Pro Fit BRG-B-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 HV and 2" bearing assembly part number 189100, 189101, 189102, 189103, 189162, 189163. It also can replace the Armstrong bearing assemble for their S-35 and H-32 pump or part number 816549-091.