Notes: 11421C-21420 FLYWHEEL is original YANMAR product. 11421C-21420 FLYWHEEL5 is commonly used in transmissions/axles/engines L70N6-GYCS, L70N6-PY, L70N6-PYST, L70N6-PYT, L70V6-MMA, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849