The McCormick 6628221A2 is a genuine OEM coupling designed for a wide range of McCormick tractor models. This essential component ensures proper power transmission and operational integrity within the machinery. It is compatible with McCormick CX series (CX100, CX105, CX110, CX115, CX50, CX60, CX70, CX75, CX80, CX85, CX90, CX95), MC series (MC100, MC105, MC110, MC115, MC120, MC130, MC135, MC80, MC90, MC95), MTX series (MTX110, MTX120, MTX125, MTX135, MTX140, MTX150, MTX155, MTX165, MTX175, MTX185, MTX200), X6 series (X6.420, X6.430, X6.440, X60.20, X60.30, X60.40, X60.50), X7 series (X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680), and XTX series (XTX185, XTX200, XTX215) tractors. This coupling is also cross-referenced as Case IH part number 87340078.