The John Deere M89138 is a genuine OEM crankshaft pulley designed for optimal performance and durability in John Deere agricultural and utility equipment. This essential component ensures proper power transmission from the crankshaft to other engine accessories. It is engineered to precise specifications for a perfect fit and reliable operation in compatible John Deere models, including numerous utility and compact utility tractors. Using genuine John Deere parts like the M89138 helps maintain the integrity and longevity of your machinery.