Notes: 23000-050000 CLAMP 50 is original YANMAR product. 23000-050000 CLAMP 505 is commonly used in transmissions/axles/engines YEG22SL, YEG12SL, YEG22TL, YEG12TL, YEG30TL, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849