(Fitment) -- PHILTOP Belt Tensioner with Pulley Replacement For GL550 2008-2012, GLK350 2010-2012, ML350 2006-2011, ML550 2008-2011, R350 2006-2011, S400 2012-2013, S550 2007-2011, SL550 2007-2009, SL550 2011-2012, SLK280 2006-2007, SLK300 2009-2011, SLK350 2005-2011, G550 2009-2015, C230 2006-2007, Sprinter 2500/Sprinter 3500 2007-2008, C280 2006-2007, C300 2008-2012, C350 2006-2011, CL550 2007-2010, CLK350 2006-2009, CLK550 2007-2009, CLS550/E550 2007-2011, E350 2006-2011, GL450 2007-2012 (OE Reference Number) -- 38319, 2722000270, Manufactured using the same or improved technology and quality materials as the original equipment manufacturer (OEM) components to ensure a factory match (Labyrinth Seal Protection) -- PHILTOP automatic drive belt tensioner assembly with pulley adopts labyrinth seal to protect internal components, meeting or exceeding the service life requirements of the original manufacturer (Long service life) -- The damping system tested hundreds of times absorbs extreme vibration to improve the life of the tensioner as well as belts and accessories (Strong stability) -- Torsion round spring design used in PHILTOP tensioner provides reliable and stable tension PHILTOP Automatic Drive Belt Tensioner with Pulley Assembly Product Information Reference : OE: 38319 2722000270 TIPS: Use the "Amazonconfirmedfit" in the upper left corner of the link to confirm the year/make/model of the vehicle you are purchasing before making your purchase. Fitment: GL550 2008-2012 5.5LML350 2006-2011 3.5LML550 2008-2011 5.5LR350 2006-2011/ S400 2012-2013 3.5LS550 2007-2011 5.5LSL550 2007-2009 / SL550 2011-2012 5.5LSLK280 2006-2007 / SLK300 2009-2011 3.0LSLK350 2005-2011 3.5LSprinter 2500/ Sprinter 3500 2007-2008 3.5LGL450 2007-2012 4.7L C230 2006-2007 2.5L/ C280 2006-2007 3.0LC300 2008-2012 3.0LC350 2006-2011 3.5LCL550 2007-2010 5.5LCLK350 2006-2009/ CLK550 2007-2009 5.5LCLS550 2007-2011 5.5LE350 2006-2011 3.5LE550 2007-2011 5.5LG550 2009-2015 5.5LGLK350 2010-2012 3.5L Why choose PHILTOP Belt Tensioner with Pulley?