The John Deere AM105649 is an authentic OEM mower drive belt sheave designed for specific John Deere lawn and garden tractor models. This crucial component ensures efficient power transfer from the engine to the mower deck, facilitating smooth and reliable operation. Manufactured to John Deere's rigorous standards, this sheave provides durability and precise fitment, maintaining the performance and longevity of your mowing equipment. Replace worn or damaged sheaves with this genuine part to restore optimal belt tension and drive system functionality.