The BEPCO BPC2134133 Piston Ring Set is a high-quality replacement component designed for various Massey Ferguson agricultural tractors and industrial/construction machines. This set is engineered for engines such as AD3.152, A3.152, AT3.152, A4.203, and AD4.203, ensuring optimal engine performance and sealing. It features a bore diameter of 91.44 mm and includes rings with thicknesses of 2.38 mm, 2.38 mm, and 4.76 mm. This genuine BEPCO part is a direct equivalent to several Massey Ferguson OEM numbers, providing reliable fitment and durability.