Description: It is connected to various engine drive components through a belt drive system and helps to ensure that these components receive power from the rotating crankshaft to perform important functions. This Belt Idler Pulley fits for Mercedes-Benz when using a short water pump. It can change the bending direction of the belt, prevent the belt from shaking, making the belt better contact with another pulley and not fall off. Please confirm your car model of the part before purchasing to avoid buying the wrong one. This is a non-OEM product, accessory only! Specification: Color: Black Material: Metal Size: 2.5x6.7cm / 0.98"x2.64"(H*D) Thread Size: M8x1.25 OE Number: 2722021019 Fitment: for Mercedes-Benz C 230 2006-2007 for Mercedes-Benz C 280 2006-2007 for Mercedes-Benz C 300 2008-2012 for Mercedes-Benz C 350 2006-2011 for Mercedes-Benz CL 550 2007-2010 for Mercedes-Benz CLK 350 2006-2009 for Mercedes-Benz CLK 550 2007-2009 for Mercedes-Benz CLS 550 2007-2011 for Mercedes-Benz E 350 2006-2011 for Mercedes-Benz E 550 2007-2011 for Mercedes-Benz G 550 2009-2015 for Mercedes-Benz GL 450 2007-2012 for Mercedes-Benz GL 550 2008-2012 for Mercedes-Benz GLK 350 2010-2012 for Mercedes-Benz ML 350 2006-2011 for Mercedes-Benz ML 550 2008-2011 for Mercedes-Benz R 350 2006-2012 for Mercedes-Benz S 400 2010-2013 for Mercedes-Benz S 550 2007-2011 for Mercedes-Benz SL 550 2007-2012 for Mercedes-Benz SLK 280 2006-2008 for Mercedes-Benz SLK 300 2009-2011 for Mercedes-Benz SLK 350 2005-2011 Package Included: 1 x Accessory Belt Idler Pulley