This clutch drum assembly is a replacement part designed for FS350, FS400, and FS450 trimmers. It is compatible with OEM part numbers 4128 160 2900 and 4128 160 2001, offering reliable clutch operation and long service life to help you maintain peak cutting performance. Key benefits Restores clutch engagement and smooth power transfer, reducing slippage and startup delay. Durable construction engineered to withstand heat, wear, and demanding trim work for extended service intervals. OEMspec fit with straightforward replacement, helping to minimize downtime and keep your trimmer in service. Key attributes Functionality: clutch drum assembly for trimmer clutch system Compatibility: FS350, FS400, FS450 trimmers; OEM part numbers 4128 160 2900 and 4128 160 2001 Material: built for durability to resist wear and failure under typical trimming conditions Performance: designed to meet OEM specifications to ensure consistent clutch action and reliable operation Size/fit: molded to match the original drum geometry for proper seating and engagement Installation: intended as a direct replacement part; ensure nearby components are inspected and replaced as needed during maintenance Two to three use cases Replacing a worn or glazed clutch drum in an FS450 after heavy season use to restore smooth engagement and prevent slipping Performing routine maintenance on a fleet of FS350 or FS400 trimmers to maintain consistent clutch performance and reduce unexpected downtime Repairing a trimmer that fails to engage or experiences weak cutting authority due to a degraded clutch drum, restoring full power transfer to the cutting head Notes For use with FS350, FS400, and FS450 trimmers and compatible with OEM numbers 4128 160 2900 and 4128 160 2001. Verify overall condition of the clutch system and adjacent components as part of a comprehensive maintenance check to ensure performance.