Imported Mercedes alternator, 180 Amps. It fits several Mercedes models, and fits engine 157, most importantly: * E63 AMG W212 5.5 V8 * CLS63 AMG C218 5.5 V8 * ML63 AMG W166 * GL63 AMG X166 * G63 AMG W463 * SL63 AMG R231 * GLE63 AMG / GLE63 S * GLS63 AMG