Set of three rings for the hydraulic top lid piston, 3".
Please note that some MF tractors had other sizes of pistons (2 1/2", 3 1/8", 3 5/8", etc.). Since this part could have been swapped by a prior owner of your tractor, it's important to disassemble your tractor and measure the piston before ordering rings.
OEM part number: 830663M91, 180898M1.
Fits a Massey Ferguson 200, 35, 35 Gas / 35 Petrol, 35X, TE20, TEA20, TED20, TEF20, TO20