{"product_id":"audi-4-2l-v8-accessory-serpentine-belt-tensioner-079903133r","title":"Audi 4.2L V8 Accessory Serpentine Belt Tensioner 079903133R","description":"\u003ch2\u003ePremium Accessory Belt Tensioner for Audi 4.2L V8\u003c\/h2\u003e\n\u003cp\u003eMaintain stable accessory-belt tension with this replacement \u003cstrong\u003eserpentine \/ V-ribbed belt tensioner, reference 079903133R\u003c\/strong\u003e. The assembly is designed for selected Audi 4.2L V8 applications and replaces earlier 079903133C, 079903133D and 079903133E references.\u003c\/p\u003e\n\u003ch3\u003eMaterial \u0026amp; Construction\u003c\/h3\u003e\n\u003cp\u003eThe tensioner combines a rigid cast-metal mounting body, precision pulley, steel fasteners and an internal spring-loaded tensioning mechanism. Its job is to keep the accessory belt running with controlled tension as engine speed and accessory loads change.\u003c\/p\u003e\n\u003ch3\u003eFunction \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaintains correct tension on the accessory drive belt.\u003c\/li\u003e\n\u003cli\u003eHelps reduce belt flutter, slip and unwanted drive-system noise.\u003c\/li\u003e\n\u003cli\u003eSupports stable operation of belt-driven accessories.\u003c\/li\u003e\n\u003cli\u003eReplaces worn pulley bearings, weak tensioning action or a damaged tensioner assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReference Numbers\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCurrent Reference:\u003c\/strong\u003e 079903133R\u003cbr\u003e\u003cstrong\u003eReplaces:\u003c\/strong\u003e 079903133C, 079903133D, 079903133E.\u003c\/p\u003e\n\u003cp\u003eMatch the reference number, mounting layout and pulley position with the original component before installation.\u003c\/p\u003e\n\u003ch3\u003eHow to Replace\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eAllow the engine to cool and disconnect the battery according to the vehicle service procedure.\u003c\/li\u003e\n\u003cli\u003eRecord the accessory-belt routing or photograph it before removal.\u003c\/li\u003e\n\u003cli\u003eRelieve belt tension using the correct tensioner tool and remove the belt from the tensioner pulley.\u003c\/li\u003e\n\u003cli\u003eRemove the tensioner mounting hardware and take out the old assembly.\u003c\/li\u003e\n\u003cli\u003eInstall the replacement tensioner and torque the fasteners to the vehicle specification.\u003c\/li\u003e\n\u003cli\u003eRoute the belt correctly over every pulley, then release the tensioner slowly.\u003c\/li\u003e\n\u003cli\u003eCheck belt alignment and run the engine briefly to confirm smooth, quiet tracking.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cp\u003eReplace the tensioner when there is pulley-bearing noise, visible belt flutter, weak spring force, belt tracking problems or excessive movement from the tensioner arm.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat part number is this?\u003c\/strong\u003e\u003cbr\u003eThe current reference is 079903133R.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich earlier numbers does it replace?\u003c\/strong\u003e\u003cbr\u003e079903133R supersedes 079903133C, 079903133D and 079903133E.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the belt tensioner do?\u003c\/strong\u003e\u003cbr\u003eIt applies controlled spring force to the accessory belt so the belt remains properly tensioned across the pulley system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould the belt be replaced at the same time?\u003c\/strong\u003e\u003cbr\u003eIf the existing belt shows cracking, glazing, fraying or contamination, replacing it during tensioner service is recommended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat should be checked after installation?\u003c\/strong\u003e\u003cbr\u003eConfirm correct belt routing, centered tracking on every pulley and smooth operation without chirping, vibration or belt wander.\u003c\/p\u003e","brand":"Clay Zenith Auto Parts","offers":[{"title":"079903133R","offer_id":45630705074199,"sku":"079903133R","price":219.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0815\/1659\/3175\/files\/1688_image_share_c713e394f0e04c6f55a08c050f428bdb.jpg?v=1790290554","url":"https:\/\/orivoauto.com\/products\/audi-4-2l-v8-accessory-serpentine-belt-tensioner-079903133r","provider":"ORIVOAUTO","version":"1.0","type":"link"}