Notes: 183250-11960 BONNET ASSY, HEAD is original YANMAR product. 183250-11960 BONNET ASSY, HEAD4 is commonly used in transmissions/axles/engines L48AE-DGY6B, L70AE-DEGY6B, L100AE-DEGY6B, L100AEDEGY6B, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849