Mercedes AMG M113K 2 piece Serpentine Idler Kit

For E55, CLS55, CL55, S55, G55, SL55 , S55These are the two additional idlers (#4 and #5) you need if you already have a 3 piece kit. Larger idler replaces the serpentine belt tensioner idler, located on the lower right front of engine . The smaller idler replaces the lower idler pulley for the serpentine belt. These idlers are known as the 4th and 5th idler kit. Both idlers replace the OEM molded plastic idlers that are known to fail on these engines, Made from solid Billet aluminum in the USA. Black Anodize finish Uses the famous NACHI bearings, known as the top performance bearing in the industry. 113 202 04 19, A 113-2020419A, 113-202-04-19-A If you have all OEM idlers, please see our complete 5 piece idlers set on this site,