The John Deere AL66771 is a genuine OEM spacer designed to provide precise spacing and alignment for various components in John Deere agricultural and construction equipment. This essential part maintains correct clearances and reduces wear, contributing to the longevity and optimal performance of your machinery. It is compatible with a wide range of John Deere tractors, combines, forage harvesters, cotton pickers, and sprayers, including models in the 6000, 7000, 8000, and 9000 series, as well as R-series and S-series machines. Manufactured to John Deere's rigorous standards, the AL66771 spacer measures approximately 38.1 mm in length and width, and 12.7 mm in height, with a weight of about 0.023 kg.