Notes: 123912-18011 TURBINE, RHF5 is original YANMAR product. 123912-18011 TURBINE, RHF55 is commonly used in transmissions/axles/engines 4TNE106T-GE, 4TNE106T-NS, 4TNE106T-TBL, 4TNE106T-G1A, 4TNE106-G1A, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849