Piston Ring Set 1121211540 1-12121154-0 Compatible with Engine 6WG1 6WF1 CXZ51K Compatible with Excavator ZX450-3 This piston ring set is designed for compatibility with engine models 6WG1 and 6WF1.It includes part numbers 1121211540 and 1-12121154-0, and is used in excavator model ZX450-3.The set is engineered to maintain proper compression and oil control within the engine cylinder.Each ring is manufactured to match specifications for fit and function.This product is intended for use in engines where precise ring dimensions and material composition are required for. This replacement is made by an independent supplier.All brand references are used solely to indicate compatibility.