{"product_id":"d13-mp7-ac-belt-tensioner-heavy-duty-21454379-49601","title":"D13 MP7 AC Belt Tensioner - Heavy Duty Replaces 21454379 49601","description":"\u003cp\u003eStop chasing accessory belt squeals and prevent a total loss of your air conditioning and alternator power with this premium aftermarket \u003cstrong\u003eD13 MP7 AC Belt Tensioner\u003c\/strong\u003e manufactured for FleetPro Parts \u0026amp; Tires. When the internal spring or bearing in your tensioner begins to fail, your belt slips, causing poor alternator charging and weak AC performance. This is a heavy-duty assembly built to meet or exceed the exact factory specifications required for your high-torque Volvo or Mack engine. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel shops, and owner-operators nationwide.\u003c\/p\u003e\n\n\u003ch2\u003eFlawless Accessory Drive: The D13 MP7 AC Belt Tensioner Advantage\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003eD13 MP7 AC Belt Tensioner\u003c\/strong\u003e is engineered specifically for the rigorous demands of the 2008-2018 Volvo D13 (12.8L) and Mack MP7 (10.8L) engine platforms. Designed explicitly for the Alternator and AC mounting positions, this tensioner features a heavy-duty internal damping mechanism that absorbs the brutal torsional vibrations of a modern diesel engine. Because it is built to strict OE standards, it guarantees perfect belt alignment and maintains exact, constant tension, preventing the premature belt stretching and snapping that occurs with cheap, rigid tensioners.\u003c\/p\u003e\n\n\u003cp\u003eAt FleetPro Parts \u0026amp; Tires, we know that your rig's uptime is non-negotiable. Don't gamble with inferior \"will-fit\" tensioners that lose their spring rate after a few months of heavy hauling. This unit serves as the direct factory replacement for highly searched OEM part numbers like Volvo 21454379 and 23669027, as well as aftermarket equivalents like Continental 49601 and Gates 38671. Stick with FleetPro's trusted aftermarket quality to ensure your accessory drive stays reliable and out of the shop.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eEngine Fitment \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis heavy-duty tensioner assembly features an exact-fit design intended strictly for the following commercial powerplants:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEngine Application:\u003c\/strong\u003e Volvo D13 (12.8L) \u0026amp; Mack MP7 (10.8L)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eYear Range:\u003c\/strong\u003e 2008-2018 (Fits Volvo Gen 2 VNL\/VNR \u0026amp; Mack platforms)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eComponent Group:\u003c\/strong\u003e Engine Cooling, Air Conditioning \u0026amp; Alternator Drive\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMount Position:\u003c\/strong\u003e Alternator and AC Mount Only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eDirect Replacement \u0026amp; Cross-Reference Numbers:\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eThis premium aftermarket tensioner serves as a direct exact-fit replacement for the following part numbers:\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVolvo \/ Mack OEM:\u003c\/strong\u003e 21454379, 23669027\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eContinental \/ Contitech:\u003c\/strong\u003e 49601, 81649601\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGates Interchange:\u003c\/strong\u003e 38671\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDayco Interchange:\u003c\/strong\u003e 89477DAY\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Automatic Belt Tensioner Assembly\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Alternator \u0026amp; AC Drive Belt\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.0 lbs\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand New\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct Level:\u003c\/strong\u003e Premium Aftermarket (Meets or Exceeds OE Specs)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e FleetPro Parts \u0026amp; Tires\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FleetPro","offers":[{"title":"Default Title","offer_id":42623332876359,"sku":"FP-905-03-1811","price":93.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/8035\/2583\/files\/fp-905-03-1811-d13-mp7-ac-belt-tensioner-heavy-duty-replaces-21454379-49601-fleetpro-3446830.jpg?v=1779136453","url":"https:\/\/fleetpropt.com\/products\/d13-mp7-ac-belt-tensioner-heavy-duty-21454379-49601","provider":"FLEETPRO PARTS \u0026 TIRES ","version":"1.0","type":"link"}