Genuine Original Equipment Manufacturer (OEM) parts! Special details: The housing mounting holes for mandrel assembly 587819701 aren’t threaded; use the included self-tapping bolts to attach the housing to the tractor deck. This mandrel assembly (part number 587819701) is for lawn tractors. Mandrel assembly 587819701 attaches to the mower deck and spins the blades. The assembly includes the mandrel housing, mandrel shaft, bearing and 4 self-tapping bolts. Wear work gloves to protect your hands when installing this part. For Craftsman, Poulan, Ariens, Southern States, Murray, & Weed Eater.