{"product_id":"volvo-886","title":"Volvo Penta Serpentine Belt Tensioner 3885250 | 4.3L–8.1L Gasoline","description":"\u003ch2\u003ePart Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 3885250\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 Serpentine \/ accessory drive belt tensioner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 3587858, 3861010, 3587859\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Accessory drive — serpentine belt tensioning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagram Position:\u003c\/strong\u003e Serpentine belt drive assembly — 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 3885250 is the current OEM belt tensioner for a wide range of Volvo Penta gasoline marine engines. It is the direct replacement for earlier tensioner numbers 3587858, 3861010, and 3587859. The tensioner maintains correct operating tension on the serpentine accessory drive belt, keeping the alternator and other belt-driven accessories running properly while reducing belt slip, premature belt wear, and accessory drive vibration. Always confirm engine model and serial number against the applicable Volvo Penta parts diagram before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta 4.3GL \/ 4.3Gi \/ 4.3GXi\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 5.0GL \/ 5.0Gi \/ 5.0GXi\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 5.7Gi \/ 5.7GXi \/ 5.7OSi \/ 5.7OSXi\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 8.1Gi \/ 8.1GXi \/ 8.1OSi \/ selected 8.1 IPS applications\u003c\/li\u003e\n\u003cli\u003eVolvo Penta V6-200 \/ V6-225\u003c\/li\u003e\n\u003cli\u003eVolvo Penta V8-225 \/ V8-270 \/ V8-300 \/ V8-320\u003c\/li\u003e\n\u003cli\u003eApplications previously using tensioner 3587858, 3861010, or 3587859\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eVolvo Penta used this tensioner across many engine variants and production revisions. Always confirm engine model and serial number against the applicable Volvo Penta parts 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\u003eAccessory belt cannot maintain proper tension\u003c\/li\u003e\n\u003cli\u003eTensioner pulley has excessive play, roughness, or bearing noise\u003c\/li\u003e\n\u003cli\u003eTensioner arm binds or moves inconsistently\u003c\/li\u003e\n\u003cli\u003ePersistent belt squeal or belt-tracking issues that remain after the belt itself has been inspected\u003c\/li\u003e\n\u003cli\u003eVisible corrosion, cracking, or damage to the tensioner body or spring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cp\u003eInspect the belt tensioner at every scheduled accessory drive service. Replace it whenever the serpentine belt is replaced on high-hour engines, or any time the tensioner pulley shows play or roughness during belt removal. A failing tensioner accelerates belt wear and can cause unexpected belt loss at sea.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eInspect the full accessory drive system while the belt is off — including tensioner pulley condition, idler pulleys, accessory pulley alignment, and mounting hardware. Confirm correct belt routing before releasing the tensioner arm and verify that the belt is fully seated in every pulley groove after installation. Refer to the Volvo Penta service manual for tensioner arm release procedure and torque specifications.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Parts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131506241572\"\u003eVolvo Penta Serpentine Drive Belt 21132390 — 4.3L 5.0L 5.7L 8.1L Gasoline\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131502538788\"\u003eVolvo Penta Serpentine Belt Idler Pulley 3861009\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131502243876\"\u003eVolvo Penta Idler Pulley 3860201\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\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 3885250\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 3587858, 3861010, 3587859\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insight\u003c\/h2\u003e\n\u003cp\u003eThis is one of the most commonly deferred service items on Volvo Penta gasoline-powered sterndrives — owners often replace the belt but leave the original tensioner in place, only to return with a thrown belt or broken tensioner arm the following season. A worn tensioner affects the entire accessory drive system, not just belt tension. If you are replacing the serpentine belt, inspect the tensioner and idler pulleys at the same time and replace any components showing play, noise, or corrosion. Ordering the tensioner and belt together as a set is the most reliable approach for high-hour engines.\u003c\/p\u003e","brand":"VOL","offers":[{"title":"Default Title","offer_id":43564037111844,"sku":"3885250","price":208.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/dc2288f6-b768-4129-9a92-9a5dd1bd2676.png?v=1788637681","url":"https:\/\/marisolmarine.com\/products\/volvo-886","provider":"Marisol Marine Company","version":"1.0","type":"link"}