Keep your bike running smoothly with this replacement oil seal! It’s sized 50mm outer diameter, 34mm inner diameter, and 7mm thick—perfect for preventing oil leaks in engines and transmissions. Fits a wide range of 125cc motorcycles from brands like AJS, Lexmoto, Lifan, Kinroad, and many others (check the list in the description). Made from durable rubber/synthetic material to seal moving parts and keep dirt and moisture out. A must-have for maintenance to protect your engine’s lubrication system. Part number OLSL042. Simple, reliable, and helps extend your bike’s life.