{"product_id":"volvo-423","title":"Volvo Penta Accessory Belt Tensioner 24201573 | D11 D13 TAD1340–1346GE","description":"\u003ch2\u003ePart Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 24201573\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Volvo Penta\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Automatic accessory \/ alternator belt tensioner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 21422765, 21819687\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Accessory drive — alternator and belt-driven component tensioning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagram Position:\u003c\/strong\u003e Accessory \/ alternator belt drive assembly — automatic tensioner position\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approx. 0.7 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout This Part\u003c\/h2\u003e\n\u003cp\u003eGenuine Volvo Penta 24201573 is the current OEM automatic belt tensioner for selected Volvo Penta heavy-duty D11 and D13-family industrial and marine-derived engines. It is the direct replacement for earlier tensioner numbers 21422765 and 21819687. The tensioner maintains consistent tension on the accessory \/ alternator drive belt as the belt wears and operating loads change, keeping the alternator and other belt-driven components running correctly. Because Volvo Penta uses different belt arrangements depending on engine configuration and installed accessories, fitment must be confirmed by engine model, serial number, and the specific accessory-drive diagram.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta TAD1346GE — accessory belt tensioner position\u003c\/li\u003e\n\u003cli\u003eSelected Volvo Penta TAD1340 \/ TAD1341 \/ TAD1342 \/ TAD1343 belt systems\u003c\/li\u003e\n\u003cli\u003eSelected Volvo Penta D11 marine applications with supercharger\u003c\/li\u003e\n\u003cli\u003eSelected Volvo Penta D13 applications with viscous-fan clutch\u003c\/li\u003e\n\u003cli\u003eApplications previously using tensioner 21422765 or 21819687\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eD11 and D13-family engines can use different tensioners depending on alternator, fan-drive, and accessory configuration. Always confirm engine model and serial number against the applicable Volvo Penta accessory-drive diagram before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cp\u003eInspect or replace the belt tensioner if any of the following are present:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExcessive accessory belt movement or vibration during operation\u003c\/li\u003e\n\u003cli\u003eBelt squeal or recurring belt slippage\u003c\/li\u003e\n\u003cli\u003eDifficulty maintaining correct belt tension after belt replacement\u003c\/li\u003e\n\u003cli\u003eTensioner pulley bearing noise, roughness, or excessive play\u003c\/li\u003e\n\u003cli\u003eVisible tensioner wear, cracking, corrosion, or misalignment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA worn tensioner shortens belt life and can affect alternator output and other belt-driven system performance.\u003c\/p\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cp\u003eInspect the belt tensioner at every scheduled accessory drive or belt service. On high-hour engines, replace the tensioner whenever the drive belt is replaced. A tensioner that has been in service through multiple belt cycles should be considered a wear item, not a lifetime component.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eInspect the drive belt, idler pulleys, alternator pulley, and all related belt-drive components while the tensioner is removed. Verify correct belt routing from the Volvo Penta engine accessory-drive diagram before releasing the automatic tensioner arm. Confirm the belt is fully seated in all pulley grooves before returning the engine to service. Follow Volvo Penta service-manual torque specifications for tensioner mounting hardware.\u003c\/p\u003e\n\n\u003ch2\u003eSuperseded \u0026amp; Cross-Reference Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent OEM:\u003c\/strong\u003e 24201573\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 21422765\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 21819687\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insight\u003c\/h2\u003e\n\u003cp\u003eThis tensioner is most commonly needed during scheduled belt service or when belt slippage or accessory charging problems are traced back to a worn tensioner on D11 and D13-family engines. The most common ordering mistake is selecting a tensioner by engine displacement alone — the D11 and D13 families use different tensioners depending on alternator and fan-drive configuration, so the accessory-drive diagram is the only reliable guide. If you are replacing the drive belt at the same time, inspect the tensioner pulley bearing and replace the tensioner if there is any play or roughness — combining both items in one service interval is the most efficient approach on these engines.\u003c\/p\u003e","brand":"VOL","offers":[{"title":"Default Title","offer_id":43563996807204,"sku":"24201573","price":467.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/9c6a4d6d-97c5-4791-bab1-6262e546c4e4.png?v=1788637835","url":"https:\/\/marisolmarine.com\/products\/volvo-423","provider":"Marisol Marine Company","version":"1.0","type":"link"}