The McCormick 6636615A1 Extension is a genuine OEM component designed for a wide range of McCormick agricultural machinery. This essential part ensures proper function and compatibility across various models, including the MC series (MC80, MC90, MC95, MC100, MC105, MC110, MC115, MC120, MC130, MC135), MTX series (MTX110, MTX120, MTX125, MTX135, MTX140, MTX150, MTX155, MTX165, MTX175, MTX185, MTX200), X7 series (X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X7.440 P6-DRIVE, X7.450 P6-DRIVE, X7.460 P6-DRIVE, X7.650 P6-DRIVE, X7.660 P6-DRIVE, X7.670 P6-DRIVE, X7.680 P6-DRIVE, X7.670 VT-DRIVE, X7.680 VT-DRIVE, X7.690 P6-DRIVE), X8 series (X8.660, X8.670, X8.680, X8.660 VT-DRIVE, X8.670 VT-DRIVE, X8.680 VT-DRIVE), XTX series (XTX185, XTX200, XTX215), and ZTX series (ZTX230, ZTX260, ZTX280) tractors. Rely on this OEM extension for reliable performance and a perfect fit.