Notes: 11988153 DOUBLE U-JOINT B320 55 D (GR 185.5) L487 is original VOLVO product. 11988153 DOUBLE U-JOINT B320 55 D (GR 185.5) L4871 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849