A-B1583155MA-AI SHAFT, HEX TRACTIONOne New Aftermarket Replacement Hex Traction Shaft for Murray and Fits Craftsman Snowblowers This hex traction shaft (part number 583155MA) is a key component of the traction drive system on Murray and Fits Craftsman dual stage snowblowers. It transfers drive force within the traction assembly, and replacement is typically needed when the snowblower loses self propelled motion or the shaft shows wear or damage. This aftermarket replacement replicates