The Murray 092246SEMA Lawn Mower Stack Pulley Assembly supports smooth belt movement and power transfer in compatible lawn mower systems. It guides and rotates the drive belts through multiple pulley sections, helping transfer power from the engine to connected mower components. This replacement assembly is suitable for repair or maintenance when the original becomes worn, damaged, or... https://www.wholetoolbox.com/murray-092246sema-lawn-mower-stack-pulley-assembly/092246SEMA.html