{"product_id":"upgraded-billet-5-piece-idler-kit-for-mercedes-benz-c-class-e-class-cls-class-cl-class-sl-class-s-class-g-class-sls-amg-c63-e63-cls63-cl63-sl63-s63-g63-2007-2012-6-2l","title":"Upgraded Billet 5 Piece Idler Kit for Mercedes Benz C-Class E-Class CLS-Class CL-Class SL-Class S-Class G-Class SLS AMG C63 E63 CLS63 CL63 SL63 S63 G63 (2007-2012) 6.2L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty Billet 5-Piece Serpentine Idler Kit for 2007-2012 Mercedes Benz AMG (W204, W211, W212, C219, C216, R230, W221, W463, C197)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Upgraded Billet 5-Piece Idler Kit replaces failure-prone factory plastic serpentine pulleys on the 2007-2012 Mercedes Benz AMG 6.2L to prevent catastrophic belt failure and maintain accessory drive stability under high engine speeds.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mercedes Benz AMG Accessory Drive Pulley Failure\u003c\/h3\u003e\n\u003cp\u003eThe naturally aspirated \u003cstrong\u003eM156\u003c\/strong\u003e and \u003cstrong\u003eM159\u003c\/strong\u003e 6.2-liter V8 engines operate with aggressive rev-hang, high operating temperatures, and an 7,200+ RPM redline. OEM auxiliary pulleys rely on injection-molded composite plastic bodies and standard shielded bearings. Over repeated thermal cycles, this glass-filled nylon degrades, warps, and develops hairline fractures along the belt-contact ribs. When an OEM composite idler seizes or disintegrates under high rotational shear, the serpentine belt is instantly thrown or shredded, often causing immediate loss of cooling circulation, hydraulic steering assist, alternator charging, and severe collateral damage to front engine covers and harness wiring.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered to eliminate factory belt drive failure points, this comprehensive five-piece setup replaces all factory idlers with precision CNC-machined 6061 billet aluminum pulleys. Hard-anodized for continuous abrasion resistance against ribbed and flat micro-V belts, each billet pulley houses high-performance \u003cstrong\u003eZZ-rated Nachi\u003c\/strong\u003e precision bearings. Featuring dual metal bearing seals to block engine bay contaminants and resist high-temp grease migration, this kit withstands prolonged high-RPM track duty and engine bay heat soak while guaranteeing true zero-deflection rotational tracking.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e5 x Billet aluminum idler pulleys (complete M156 serpentine idler set as shown)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2007-2012 Mercedes Benz AMG C63, E63, CLS63, CL63, SL63, S63, G63, SLS AMG\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003eM156\u003c\/strong\u003e \/ \u003cstrong\u003eM159\u003c\/strong\u003e 6.2L V8 \/ \u003cstrong\u003eW204\u003c\/strong\u003e, \u003cstrong\u003eW211\u003c\/strong\u003e, \u003cstrong\u003eW212\u003c\/strong\u003e, \u003cstrong\u003eC219\u003c\/strong\u003e, \u003cstrong\u003eC216\u003c\/strong\u003e, \u003cstrong\u003eR230\u003c\/strong\u003e, \u003cstrong\u003eW221\u003c\/strong\u003e, \u003cstrong\u003eW463\u003c\/strong\u003e, \u003cstrong\u003eC197\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e451-563 hp \/ 443-479 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2007-2012 Mercedes Benz C-Class C63 AMG 6.2L (W204)\u003c\/li\u003e\n  \u003cli\u003e2007-2012 Mercedes Benz E-Class E63 AMG 6.2L (W211 \/ W212)\u003c\/li\u003e\n  \u003cli\u003e2007-2012 Mercedes Benz CLS-Class CLS63 AMG 6.2L (C219)\u003c\/li\u003e\n  \u003cli\u003e2007-2012 Mercedes Benz CL-Class CL63 AMG 6.2L (C216)\u003c\/li\u003e\n  \u003cli\u003e2007-2012 Mercedes Benz SL-Class SL63 AMG 6.2L (R230)\u003c\/li\u003e\n  \u003cli\u003e2007-2012 Mercedes Benz S-Class S63 AMG 6.2L (W221)\u003c\/li\u003e\n  \u003cli\u003e2007-2012 Mercedes Benz G-Class G63 AMG 6.2L (W463)\u003c\/li\u003e\n  \u003cli\u003e2007-2012 Mercedes Benz SLS AMG 6.2L (C197)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the W204, W211, and W212 Mercedes Benz AMG?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2007-2012 Mercedes Benz AMG models equipped with the naturally aspirated \u003cstrong\u003eM156\u003c\/strong\u003e 6.2L V8 engine. \u003cstrong\u003eThis kit does not fit 5.5L M157 Biturbo or supercharged 5.4L M113K platforms; verify engine code and 5-idler layout prior to ordering.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eAre these pulleys direct bolt-on replacements or do they require custom belt lengths?\u003c\/h4\u003e\n\u003cp\u003eThese billet idlers match original equipment outer diameters and run surface profiles, utilizing your standard OEM routing and standard serpentine belt without modifications.\u003c\/p\u003e\n\n\u003ch3\u003eThe Mercedes Benz Precision Standard\u003c\/h3\u003e\n\u003cp\u003eConstructed to exacting European high-speed endurance standards, these hard-anodized billet idlers deliver zero run-out, whisper-quiet bearing operation, and absolute protection against catastrophic belt throws on high-output AMG powertrains.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67558772408568,"sku":"DS-ESK1SUER2","price":529.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/upgraded-billet-5-piece-idler-kit-for-mercedes-benz-c-class-e-class-cls-class-cl-class-sl-class-s-class-g-class-sls-amg-c63-e63-cls63-cl63-sl63-s63-g63-2007-2012-6-2l-1.jpg?v=1790925124","url":"https:\/\/performancechiptuning.com\/de\/products\/upgraded-billet-5-piece-idler-kit-for-mercedes-benz-c-class-e-class-cls-class-cl-class-sl-class-s-class-g-class-sls-amg-c63-e63-cls63-cl63-sl63-s63-g63-2007-2012-6-2l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}