Genuine AE ring set for common AE 21251 and far less common AE 21250 pistons. Sold as a set of three rings for one piston. Ring thicknesses are 1.5 1.5 and 4mm. Ref: R35960, R35960-40, R35960-60, R35960-00, R35960-20, 08-521711-00, 08-521714-00, 08-521700-00, 08-521707-00.