Application2007 compatible for Mercedes-BenzGL4502008-2012 compatible for Mercedes-BenzGL450 All Models2008-2012 compatible for Mercedes-BenzGL550 All Models2006compatible for Mercedes-Benz ML3502007-2012 compatible for Mercedes-Benz ML350 All Models2008-2012 compatible for Mercedes-Benz ML550 All Models2006 compatible for Mercedes-Benz R3502007-2012 compatible for Mercedes-Benz R350 All Modelsfor Mecerdes-Benz M-CLASS (W164) ML3504-matic (164.186) 2005/07-for Mecerdes-Benz R-CLASS (W251,V251) R300 2009/07-for Mecerdes-Benz R-CLASSs (W251,V251) R3504-maticfor Mecerdes-Benz R-CLAS (W251,V251) R5004-maticfor Mecerdes-Benz GL-CLASS (X164) GL450 (164.871)for Mecerdes-Benz GL-CLASS (X164) GL500 (164.886)Compatible for Mercedes GL 450 4MATIC2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012Compatible for Mercedes GL 450 RWD2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012Compatible for Mercedes ML 3002010, 2011Compatible for Mercedes ML 3502009, 2010, 2011Compatible for Mercedes ML 350 4MATIC2005, 2007, 2008, 2009, 2010, 2011Compatible for Mercedes ML 350 RWD2005, 2006, 2007, 2008, 2009, 2010, 2011Compatible for Mercedes R 2802005, 2006, 2007, 2008, 2009, 2010, 2011Compatible for Mercedes R 3002005, 2006, 2007, 2008, 2009, 2010, 2011Compatible for Mercedes R 3502005, 2006, 2007, 2008, 2009, 2010, 2011Compatible for Mercedes R 350 4MATIC2005, 2006, 2007, 2008, 2009, 2010, 2011Compatible for Mercedes R 350 RWD2005, 2006, 2007, 2008, 2009, 2010, 2011Compatible for Mercedes R 500 4MATIC2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012Compatible for Mercedes R 500 RWD2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012Compatible for Mercedes R 550 4MATIC2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012Compatible for Mercedes R 550 RWD2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012OEM Number21-157 21157 AA121-1570054662201 A0054662201 00446691010044667601 00446686010054662001 541024210 52101279 96-120SpecificationOEM Number or Interchangable Part Number:21-157 21157 AA121-1570054662201 A0054662201 00446691010044667601 0044668501 00446686010054662001 541024210 52101279 96-120Type: Power Steering PumpPlacement on Vehicle: FrontQuantity: 1 PieceWarranty: one year warranty for any manufacturing defect Notice * Please confirm your original part number or oem numbr can matche up with one of the part numbers above* Professional installation is highly recommended (No Instruction Included)* For whatever we can help,please feel free to contact us. We are always here for you.