Notes: 339074 BEAM 28.50 339073 L1366.5 is original CARRARO product. 339074 BEAM 28.50 339073 L1366.54 is commonly used in transmissions/axles/engines 370341, 644570, 644570, 370341, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849