STIHL Pump Piston for 024 & 026 Chainsaws The STIHL Pump Piston (1121 647 0603) is a genuine STIHL replacement part designed to help maintain the performance and reliability of compatible STIHL petrol chainsaws. As an important internal component, this pump piston is engineered for a precise fit and dependable operation, making it a practical replacement for servicing or repairing worn oil pump-related components on selected STIHL chainsaw models. Manufactured to genuine STIHL standards, this replacement chainsaw pump piston is built for durability in demanding working conditions and is suitable for use on classic STIHL saws including the 024 and 026, as well as selected later MS-series models. It is an essential service part for keeping your chainsaw operating efficiently and reliably over time. Key Features Genuine STIHL replacement pump piston Original STIHL OEM part number: 1121 647 0603 Designed for dependable fit and compatibility Built for durability in demanding chainsaw operating conditions Helps maintain correct chainsaw pump system performance Suitable for servicing and repair of compatible STIHL chainsaws Direct replacement for worn or damaged original part Designed to support long-term machine reliability Designed for Reliable Chainsaw Performance The STIHL Pump Piston is designed to help keep your chainsaw’s pump system operating correctly, supporting smooth and dependable machine function during use. Replacing worn internal parts with genuine STIHL components is an important part of maintaining consistent performance and prolonging the working life of your saw. Durable OEM Quality for Service and Repair As a genuine STIHL part, this pump piston is manufactured to match the original equipment specification for fit and function. It is built to handle the vibration, mechanical load and working conditions associated with regular chainsaw use, making it a dependable option for professional servicing or workshop maintenance. Compatibility and Application This STIHL pump piston is suitable for use on selected STIHL chainsaws including the 024, 026, MS 240, MS 260, MS 260 C, MS 261 and MS 261 C. It is commonly used as part of routine maintenance or repair work when replacing worn or damaged internal pump-related components. Also commonly referred to as a chainsaw pump piston or STIHL piston, it is a practical spare part for maintaining reliable saw operation. Technical Specifications Specification Details Product Name STIHL Pump Piston for 024 & 026 Chainsaws OEM Part Number 1121 647 0603 Product Type Pump piston / replacement chainsaw part Brand STIHL Primary Use Chainsaw maintenance and repair Alternate Part Numbers 11216470603 Alternative Names Chainsaw pump piston, STIHL piston Compatible Models Fits selected STIHL chainsaw models including: 024, 026, MS240, MS260, MS260C, MS261, MS261C. Ideal For Repairing and maintaining compatible STIHL chainsaws Replacing worn or damaged internal pump components Workshop servicing and chainsaw rebuilds Keeping older STIHL saws running efficiently Restoring reliable chainsaw performance Best For The STIHL Pump Piston 1121 647 0603 is best for users and technicians maintaining compatible STIHL chainsaws who need a genuine replacement part for dependable repair and long-term performance. Why Choose STIHL Pump Piston 1121 647 0603? Using a genuine STIHL pump piston helps ensure correct fit, reliable performance and proper compatibility with your chainsaw. For servicing and repair work, it is a dependable OEM replacement part that helps keep your saw working as intended.