I'm looking at replacing the annular buffers on my Stihl MS240 chainsaw, could you please let me know which art will fit?

Left Hand Side (Pos 6) - 1121 790 9904 - Annular Buffer, In stock on the below link https://www.lsengineers.co.uk/catalog/product/view/id/11719 Right Hand Side (Pos 5) - 1121 790 9903 - Annular Buffer, In stock on the below link https://www.lsengineers.co.uk/catalog/product/view/id/11660