{"product_id":"volvo-842","title":"Volvo Penta Rear Engine Mount Lock Nut 3862657","description":"\u003cp\u003eVolvo Penta 3862657 is a genuine OEM lock nut used in Volvo Penta rear engine-mount service. Current parts references identify this number specifically as a \u003cstrong\u003elock nut, rear mount\u003c\/strong\u003e or \u003cstrong\u003elock nut, engine mounting\u003c\/strong\u003e, making it the correct retaining fastener where part number 3862657 is called for in the engine-mount assembly.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Volvo Penta OEM lock nut, part number \u003cstrong\u003e3862657\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCurrent parts references identify it as \u003cstrong\u003elock nut, rear mount\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eAlso listed in current parts references as \u003cstrong\u003elock nut, engine mounting\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eUsed as a retaining fastener in Volvo Penta rear engine-mount hardware groups.\u003c\/li\u003e\n\u003cli\u003eCurrent public listings show approximate weight around \u003cstrong\u003e0.020 kg\u003c\/strong\u003e on one catalog source.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe strongest supportable fitment trail for Volvo Penta 3862657 is by \u003cstrong\u003eexact engine-mount diagram position\u003c\/strong\u003e rather than by a broad published model list. Current sources are consistent that this part is the \u003cstrong\u003erear mount \/ engine mounting lock nut\u003c\/strong\u003e, so the safest fitment standard is the exact Volvo Penta serial-number-based parts lookup for the engine and mounting assembly being serviced.\u003c\/p\u003e\n\u003ch2\u003eSerial Number Fitment Notice\u003c\/h2\u003e\n\u003cp\u003eFitment can vary by engine family, mount style, and hardware stack-up. Confirm Volvo Penta part number \u003cstrong\u003e3862657\u003c\/strong\u003e against your engine serial number and the correct Volvo Penta mounting diagram before ordering, especially where nearby nuts and mount fasteners may look similar but serve different positions.\u003c\/p\u003e\n\u003ch2\u003eWhen This Part Needs Replacement\u003c\/h2\u003e\n\u003cp\u003eReplace this lock nut when the original fastener is thread-damaged, rounded, corroded, distorted, or no longer holds the rear mount hardware securely. It is also a smart replacement during adjacent engine-mount service if the original lock nut has already been removed and shows visible wear.\u003c\/p\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eMatch this lock nut to the exact Volvo Penta application before installation. The strongest current parts trail places it at the \u003cstrong\u003erear mount \/ engine mounting\u003c\/strong\u003e position, so confirming both the part number and exact diagram location is the safest cross-check before ordering or reassembly. Inspect the related stud, washer, and mount hardware at the same time to help avoid repeat mounting issues after service.\u003c\/p\u003e\n\u003ch2\u003eAlternate\/Superseded Part Numbers\u003c\/h2\u003e\n\u003cp\u003eUse Volvo Penta \u003cstrong\u003e3862657\u003c\/strong\u003e as the primary ordering number. In the current sources reviewed, I did not see a stronger confirmed supersession trail than the active number itself.\u003c\/p\u003e\n\u003ch2\u003eParts Desk Insight\u003c\/h2\u003e\n\u003cp\u003eMounting hardware is easy to underestimate because it can look generic once it is off the engine. Matching the exact Volvo Penta mount position first is usually much safer than trying to substitute by thread and size alone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"VOL","offers":[{"title":"Default Title","offer_id":43564035604516,"sku":"3862657","price":9.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/54a02774-d0c4-43c8-b3b4-0c2c507be0e6.png?v=1776458722","url":"https:\/\/marisolmarine.com\/products\/volvo-842","provider":"Marisol Marine Company","version":"1.0","type":"link"}