Notes: 138442 HEX HEAD SCREW M8X1X23.5 is original CARRARO product. 138442 HEX HEAD SCREW M8X1X23.55 is commonly used in transmissions/axles/engines 132886, 138094, 138116, 138117, 138202, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849