Harley FLH-80/Classic Shovelhead Rear Caliper Anchor Arm (OEM #44155-81, 1981-84)
Based on the squared ends, we're fairly certain this is OEM #44155-81, correct for use on FLH-80 and Classic Shovelheads from 1981-84.
We understand there is a "-73" version, but those we have seen have rounded ends. It's likely the stock type was the same, but we don't know if the lengths varied between the "-73" and "-81" versions. Specifically, this was used in conjunction with the "dual piston" caliper.
062619 D-4 (19 01 27, 7-6)