{"product_id":"belt-tensioner-21454379-23669027-replaces-for-volvo-d13-engine-truck-fh-fh-4","title":"Belt Tensioner 21454379 23669027 Replaces for Volvo D13 Engine Truck FH FH (4)","description":"\u003cstrong\u003eDesigned for compatible Volvo trucks, this aftermarket belt tensioner replaces helps maintain proper belt tension and tracking.\u003c\/strong\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe tensioner keeps the drive belt loaded against the pulleys as the system operates. Bearing noise, wobble, weak spring force, or uneven belt wear can indicate a worn tensioner or pulley.\u003c\/p\u003e\u003cp\u003eReplacement references include \u003cstrong\u003e21454379\u003c\/strong\u003e and \u003cstrong\u003e23669027\u003c\/strong\u003e. Match the part number, pulley diameter, width, mounting point, offset, and tensioner arm design with your original part.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMaintains proper drive-belt tension\u003c\/li\u003e\n\u003cli\u003eHelps reduce slipping and uneven belt wear\u003c\/li\u003e\n\u003cli\u003eRestores smooth pulley operation\u003c\/li\u003e\n\u003cli\u003eDesigned for compatible engine accessory drives\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eCompatible with select Volvo D13 Engine Truck FH FH (4) applications. Serial-number breaks, production changes, or equipment options may affect the required part.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Belt Tensioner Replaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Brand:\u003c\/strong\u003e Volvo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e 21454379, 23669027\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Should the belt be replaced with the tensioner? \u003cstrong\u003eA:\u003c\/strong\u003e Inspect the belt and all idler pulleys at the same time. Replace any component showing cracks, glazing, noise, looseness, or wear.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this an original OEM part? \u003cstrong\u003eA:\u003c\/strong\u003e No. This is a quality aftermarket replacement designed for compatible applications.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eConfirm the original part number and physical configuration before ordering, especially when multiple versions were used.\u003c\/em\u003e\u003c\/p\u003e","brand":"Northline Parts","offers":[{"title":"Default Title","offer_id":42904032968775,"sku":"ZZ2F01942","price":137.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0681\/7123\/5399\/files\/177557365283-0.jpg?v=1782415669","url":"https:\/\/www.northlineparts.com\/products\/belt-tensioner-21454379-23669027-replaces-for-volvo-d13-engine-truck-fh-fh-4","provider":"Northline Parts","version":"1.0","type":"link"}