The McCormick 3658404M91 is a genuine OEM connecting rod designed for a wide range of Massey Ferguson, Landini, and McCormick agricultural tractors. This essential engine component ensures proper piston movement and engine function. It is also cross-referenced as 3658404M92. Confirmed fitment includes various models from the MF 300, 4200, 4300, 5300, 6100, 6200, 8100 series, Landini 60, 70, 80, 90, 100, 125, 130, 145, 160, 165, 190 series, and McCormick CX, MC, MTX series tractors. It measures approximately 195 mm in length and weighs about 0.72 kg.