1、OE Number: The referencing OE number of this engine piston ring set are C10218, 2M4860, 41785, E 921K, which is molded and designed depend on the original data. 2、Fitment: The engine cylinder ring set is a replacement for Gen III 364 6.0L V8 LQ4 LQ9 1999‑2006, please check the model and year of manufacturing before ordering. 3、Excellent Durability: The piston ring set, made from metal alloys, ensures excellent abrasion resistance, could withstand high temperatures, speeds, and pressures. 4、Efficient Sealing: The piston ring set has excellent sealing performance, effectively preventing gas and lubricant leaks, provides a powerful sealing effect to prevent engine wear. 5、Ideal Replacement: Direct replacement installation, meets or exceeds OEM standards for the replacement of old and damaged one on original vehicles.