{"product_id":"automatic-belt-tensioner-assembly-mack-mp8-volvo-d13-mack-21714847-gates-38633-819-38633","title":"Automatic Belt Tensioner Assembly - Mack MP8 \/ Volvo D13 - Mack 21714847 Gates 38633 819.38633","description":"\u003cp\u003eKeep the belt tight and quiet with this \u003cstrong\u003eAutomatic Belt Tensioner Assembly\u003c\/strong\u003e distributed by FleetPro Parts \u0026amp; Tires. It is the spring-loaded pulley assembly that holds correct tension on the accessory belt of \u003cstrong\u003eMack MP8\u003c\/strong\u003e and \u003cstrong\u003eVolvo D13 (12.8L)\u003c\/strong\u003e engines. When the spring inside a tensioner goes weak or the pulley bearing turns rough, the belt starts to flutter and squeal, wears out long before its time, and eventually lets go on the road. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide.\u003c\/p\u003e\n\n\u003ch2\u003eQuiet, Consistent Belt Tension: The Automann Tensioner Advantage\u003c\/h2\u003e\n\n\u003cp\u003eA tensioner is a wear item, not a lifetime part. The internal spring loses force with every heat cycle and every million belt revolutions, and the pulley bearing collects the grit and salt spray that any front-of-engine component lives in. This \u003cstrong\u003ecomplete assembly\u003c\/strong\u003e replaces the spring, the arm and the pulley together, so you are not putting a fresh belt against the tired half of a worn pair. At \u003cstrong\u003e4.88 lbs\u003c\/strong\u003e, it is a straightforward bolt-on that does not require pulling the front of the engine apart.\u003c\/p\u003e\n\n\u003cp\u003eManufactured by Automann to \u003cstrong\u003eFleet Standard\u003c\/strong\u003e specification and covered by the \u003cstrong\u003e1-Year FleetPro Warranty\u003c\/strong\u003e, this tensioner is the practical answer when the belt is chirping on a cold morning or you can rock the pulley by hand. At FleetPro Parts \u0026amp; Tires, we know a belt job that leaves the old tensioner on the engine is a belt job you get to do twice. It is a direct replacement for highly searched industry numbers including \u003cstrong\u003eMack 21714847\u003c\/strong\u003e, \u003cstrong\u003eGates 38633\u003c\/strong\u003e, Contitech 49586 and Dayco 89935DAY.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eVehicle Fitment \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis heavy-duty belt tensioner assembly is intended for the following commercial applications:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMack:\u003c\/strong\u003e CHU Pinnacle 09-16, CXU Pinnacle 12-17, GU Granite 09-15 with MP8\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVolvo:\u003c\/strong\u003e VAH 15-17, VHD 07-17, VN 15-17\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e Mack MP8 and Volvo D13 (12.8L)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eComponent Group:\u003c\/strong\u003e Engine Accessory Drive \/ Belts \u0026amp; Tensioners\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 Automann belt tensioner serves as a direct replacement for the following part numbers:\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMack Interchange:\u003c\/strong\u003e 21714847\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGates Interchange:\u003c\/strong\u003e 38633\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eContitech Interchange:\u003c\/strong\u003e 49586\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDayco Interchange:\u003c\/strong\u003e 89935DAY\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAutomann Distributor #:\u003c\/strong\u003e 819.38633\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 \/ Pulley Assembly\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Maintains correct belt tension\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e Mack MP8; Volvo D13 (12.8L)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.88 lbs\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-Year FleetPro Warranty\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct Level:\u003c\/strong\u003e Fleet Standard Aftermarket\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Automann (Distributed by FleetPro Parts \u0026amp; Tires)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Automann","offers":[{"title":"Default Title","offer_id":43024031645767,"sku":"819.38633","price":116.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/8035\/2583\/files\/image_1920_df767360-257f-4ea2-93ed-45be6c224072.jpg?v=1785427792","url":"https:\/\/fleetpropt.com\/products\/automatic-belt-tensioner-assembly-mack-mp8-volvo-d13-mack-21714847-gates-38633-819-38633","provider":"FLEETPRO PARTS \u0026 TIRES ","version":"1.0","type":"link"}