The Mountfield MX990 Worm Shaft is a genuine OEM replacement component specifically engineered for a wide range of Mountfield lawnmowers. This essential part plays a crucial role in the mower's drive system, facilitating efficient power transfer and maintaining optimal operational performance. Manufactured to Mountfield's original specifications, it guarantees precise fitment and long-lasting durability for models such as the 460HP, 460PD, 460R HP, 460R PD, 461HP, 461PD, 480HP, 480PD, 4810HP, 4810PD, 481HP, 481PD, 510HP, 510PD, 510PDES, 511HP, 511PD, 511PDES, M460HP, M460PD, M461HP, M461PD, M480HP, M480PD, M481HP, M481PD, M510HP, M510PD, M510PDES, M511HP, M511PD, M511PDES, S460HP, S460PD, S461HP, S461PD, S480HP, S480PD, S481HP, S481PD, S510HP, S510PD, S510PDES, S511HP, S511PD, S511PDES.