Notes: 227468 DOUBLE U-JOINT B320 55 D (GR. 185.5) L96 is original BELL product. 227468 DOUBLE U-JOINT B320 55 D (GR. 185.5) L961 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849