Designed with an aluminum cores for enhanced stability and efficient power transmission, this replacement part set includes specific components like the clutches drum ( 1121 640 2001) and oil pumps ( 1141 640 3203), ensuring easy installation without tools This lightweight clutches drum and oil pumps assembly for MS271 and MS291 chainsaws features a sturdy shell to reduce overall weight, enabling effortless operations and minimizing fatigue during prolonged use, making it a top option for chainsaw parts Enjoy consistent with this sturdy replacement clutches drum and oil pumps assembly, engineered to resist wear and deliver smooth operations for chainsaw models Suitable for urgent pruning tasks in gardens, farms, or wooded areas, this garden tool component simplifies quick replacements to handle demanding scenarios like urgent cleanup Ideal for professional landscapers and homeowners who frequently engaged in garden maintenance, this chainsaw accessory supports users requiring high reliability for extended trimming projects, Manufacturer: Shurhome