1、Fitment: Replacement for Vauxhall ASTRA MKVI (J) 12/2009. Onwards Engine Code: A16XER, A16LET B16XERMokka X (J13) 06/2002; Onwards Engine Code: A16XER B16XERZafira MKIII (P12) 10/2011; Onwards Engine Code: A16XNT, A18XEL A18XER. 2、OEM Numbers: 55582107, 25195118, 638200, 55556428, 25190867 are the reference part numbers. Please double check the part number of your item to ensure perfect fit. 3、Ensure Normal Lubrication: The timing cover closes the oil pump to ensure that the oil flows normally in the high speed engine and provides sufficient pressure to ensure the lubrication and heat dissipation of various parts. 4、Improve Engine Performance: The oil pump timing cover can ensure the normal operation of the oil pump and provide stable oil pressure, improving the performance and work efficiency of the engine. 5、Sturdy Construction: Made of high strength metal materials, this timing cover has good wear resistance, scratch resistance and high temperature resistance, to ensure long term reliable use.