The McCormick 6731159A1 FRAME is a genuine OEM structural component designed for various McCormick X4 series tractors. This essential frame provides the foundational support and structural integrity for the machine, ensuring proper alignment and durability under demanding operational conditions. It is a direct replacement part for models including X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.70F, X4.80, X4.80F, X4.90, X4.90F, X4.100, X4.100F, X4.110, X4.110F, X4.120, and X4.120F.