This genuine Massey Ferguson 186567M1 starter washer, also known as a starter motor shim, is designed to ensure proper spacing and optimal function of the starter motor. It features an inner diameter of 19.5 mm, an outer diameter of 32 mm, and a thickness of 1.5 mm. This essential component helps maintain the correct alignment and performance of the starter across a wide range of Massey Ferguson tractor models, including the 100, 200, 300, 500, 600, 2000, 3000, 4200, 4300, 5400, 6100, 6200, 8100, and 8200 series.