Fits Husqvarna 340 345 346 XP 350 351 353 445 450 Chainsaw. Pitch: .325" Teeth: 7. Replace OEM clutch for 537110503. Package includes: 1 x Clutch Drum, 1 x Clutch, 1 x Sprocket, 1 x Needle Bearing. Clutch Shaft Seal: In some cases, a clutch shaft seal may be included to prevent transmission oil leaks. Easy to Install: The specifications of our replacement parts are exactly the same as the original parts, the replacement work will be quick and effortless. Restore the Performance: The brand new, high-quality clutch drum will be very helpful in restoring your chainsaw to peak performance. Clutch replacement is a complex operation that usually requires advanced mechanical skills. It is recommended that you hire a qualified mechanic to perform this task, as incorrect clutch installation can lead to transmission problems and other vehicle malfunctions. A quality clutch kit is essential to ensure reliable operation and optimal durability of your car's transmission. Best Quality: High quality