Compatibility with For Echo Chainsaw Models: This premium clutch drum is specifically designed For a wide range of For Echo chainsaw models including CS-300, CS-3000, CS-301, CS-305, CS-306, CS-330MX4, CS-330T, and others. It ensures a perfect fit and seamless operation, providing durability and reliability For your cutting tasks. If you own any of these models, our clutch drum will be an essential addition to your tools Reliable OEM Replacement Numbers: Our clutch drum is a superb replacement For OEM parts, carrying essential codes such as 17500539133, 17500539131, 17500539132, and V555000170. Additionally, it is compatible with For Oregon's 106906x. Using OEM codes guarantees that you are getting comparable quality to the manufacturers original equipment, promoting optimal per For mance and safety during use. Trust in these replacements to keep your chainsaw operating smoothly without any hassles. Sturdy Construction & Size Specifications: Constructed with materials, this clutch drum is built to withstand rigorous conditions while maintaining functionality. The clutch drum features a 3/8" LP pitch and is equipped with 6 teeth For effective chain engagement. The needle bearing dimensions are designed For ultimate precision, with an outer diameter of 13mm and an inner diameter of 10mm. Complete Package Offering: Each purchase includes everything you need For a straight For ward installation. You will receive 1 PC For Echocs3000 passive disk integrated alongside 1 PC ST MS180 Needle Roller Bearing (dimensions: 10*13*10). This all-in-one package saves you time and hassle, ensuring that you have all the necessary components to replace your clutch drum ef For tlessly. Enjoy the convenience of having a complete solution For your chainsaw maintenance in one go! Improved Per For mance & Enhanced Usability: By replacing your old or worn-out clutch drum with this top-notch product, you can experience improved cutting per For mance and reduced downtime. A well-maintained chainsaw not only increases efficiency but also enhances safety during operation. Trust in our clutch drum to provide dependable per For mance, allowing your For Echo chainsaw to cut smoothly through various materials with ease, saving you time and ensuring job satisfaction.