Initial image data release for "The 1.28 GHz MeerKAT Galactic Center Mosaic", Heywood et al. (2022) (arXiv, in press). The mosaic has been formed from the innermost 20 pointings of the MeerKAT Galactic centre survey, totalling 144 hours of integration time. The data have been consistently processed to deliver an angular resolution of 4" over 6.5 square degrees. A lower (8") angular resolution spectral index mosaic and associated error map are also provided. Original acknowledgement for data: If you make use of these data products please cite Heywood et al. (2022), and include the standard MeerKAT acknowledgement: "The MeerKAT telescope is operated by the South African Radio Astronomy Observatory, which is a facility of the National Research Foundation, an agency of the Department of Science and Innovation."