The Murray 1679157ASM Lawn Mower Pulleys & Hub Assembly helps transfer rotational power through the mower’s drive system. The pulley works with the belt to transmit motion to connected components, while the hub supports the pulley’s mounting and rotation. Proper assembly function helps maintain consistent power transmission during mowing. Replacing worn or damaged pulley and hub compo... https://www.wholetoolbox.com/murray-1679157asm-lawn-mower-pulleys-hub-assembly/1679157ASM.html