A-B11401241MA-AI JACKSHAFT HOUSING ASSYOne New Aftermarket Replacement Jackshaft Housing Assembly for Murray Lawn Tractors This jackshaft housing assembly mounts on the mower deck and houses the jackshaft that transfers power from the engine belt to the cutting blades. Replacing a worn or damaged housing restores proper jackshaft alignment and protects internal bearings, keeping the cutting deck running smoothly. Compatible with Murray 30, 31, 38, and 40 Series lawn tractors (1999 and up),