As a recognized expert in Electrical Systems since 1923, Valeo is a top supplier of original equipment New Premium Alternator Replacements in the world. As a leader in innovation, Valeo's New Premium Alternator Replacements eliminates voltage drop and boosts fuel economy. All Valeo New Premium Alternator Replacements are 100% new products, not re-manufactured, eliminating premature failures for increased durability. All components are application specific to ensure a perfect fit and function every time. For better efficiency, the premium rare earth magnets increase the output of the New Premium Alternator Replacement without increasing the size. To ensure reliability, all applications go under extreme condition testing up to 6 months under the harshest conditions and electrical demands. The New Premium Alternator Replacement has a high resistance to heat, vibration, and contaminating particles helping maintain a maximum charge output. Fits: Mercedes-Benz GLS63 AMG (2017-2019), Mercedes-Benz G63 AMG (2013-2018), Mercedes-Benz CLS63 AMG S (2014-2018), Mercedes-Benz SL63 AMG (2013-2019), Mercedes-Benz E63 AMG S (2014-2016), Mercedes-Benz E63 AMG (2012-2015), Mercedes-Benz GLE63 AMG (2016-2019), Mercedes-Benz ML63 AMG (2012-2015), Mercedes-Benz GLE63 AMG S (2016-2019), Mercedes-Benz GL63 AMG (2013-2016), Mercedes-Benz CLS63 AMG (2012-2014)