Transfer Case Chain compatible with ML Class, GL Class, and R Class vehicles.Part number HV091 (superseded by HV523).Dimensions: 1.50 inches wide, 42 links, 3/8 inch pitch, rocker pin design.Fits 2003 and newer W164 ML models including ML320, ML500, and ML55; 2006–2012 X164 GL models including GL320 and GL450; and 2007–2011 W251 R Class models including R320, R350, and R550.Also fits 2003–2009 W163 ML320 and 2005–2011 W164 ML350, ML450, ML500, ML550, ML55, and ML63 equipped with Steyr single-speed transfer case.Does not fit non-U.S.ML models with the OFF-Road Pro Package 2-speed transfer case.