[About AISIN Aftermarket] - Leveraging AISIN's legacy as an automotive leader since 1965, our aftermarket engine harmonic balancer are engineered to the exacting standards of global manufacturers, providing secure and durable installation. [Compatibility] - Compatible with Mercedes-Benz E320 2007-2009, ML320 2007-2009, ML350 2010-2011, GL320 2007-2009, GL350 2010-2012, GLS350d 2017, R320 2007-2009 - V6 3.0L [Easy Installation] - Designed for direct replacement, plug and play. An installation manual is included for added convenience [Reference Part Number] - 6420300503, 6420300103, 6420300403 [Product Specifications] - Overall Outside Diameter (IN): 5.98, Overall Width (IN): 2.99, Ring Width (IN): 2.17, Crank Bore (IN): 1.26, Groove Quantity: 8 ASIN B0GX6958P7 Brand AISIN Item Weight 7.08 pounds Manufacturer AISIN OEM Part Number 6420300103, 6420300403, 6420300503 Special Features 8-Groove Package Dimensions 8.46 x 7.87 x 4.53 inches Manufacturer Part Number PDAMB-00173