Notes: 121051 SHIM 75X55.1X3.3 is original CARRARO product. 121051 SHIM 75X55.1X3.35 is commonly used in transmissions/axles/engines 134630, 138107, 141833, 145141, 148447, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849