Notes: 129508-18020 TURBINE, RHF4 is original YANMAR product. 129508-18020 TURBINE, RHF45 is commonly used in transmissions/axles/engines 4TNV84T-GGE, 4TNV84T-DSA2, 4TNV84T-BGGEHR, 4TNV84T-BGGEH, 4TNV84T-BGGE, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849