Notes: 119621-99300 TOOL, CARB B is original YANMAR product. 119621-99300 TOOL, CARB B4 is commonly used in transmissions/axles/engines 3TNE78A-G1A, 3TNE78A-G2A, 3TNE78A-SA, 3TNE78AC-G1A, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849