This standard specifies requirements for repair and remanufacture of drill-through equipment built under API 16A. Specifically, this standard is applicable to and establishes requirements for the repair and remanufacture of ram blowout preventers (BOPs); ram blocks, operators, packers, and top seals; annular BOPs; annular packing units; and associated connectors. This standard also applies to repair and remanufacture of drill-through equipment manufactured to API 6A requirements and produced prior to the existence of API 16A. This standard covers the testing, inspection, welding, marking, certification, handling, storing, and shipping of equipment repaired or remanufactured per this standard. Repair and remanufacture under this standard includes all remanufacture and all repairs. Maintenance activities are not governed by this document, but the documentation of those activities is included in the scope. This standard defines various repair/remanufacture specification levels (RSLs) for the equipment identified below as well as the mandatory equipment traceability that is required to prove conformity. API offers certification and registration programs to support industry safety, quality, and reliability and is conducting a survey to determine interest in a program for Standard 16AR. If you are interested in participating in the survey and did not receive prior notification, please contact global@api.org.