{"product_id":"volvo-1038","title":"Volvo Penta MS4B Transmission Sealing Ring - 853757","description":"\u003cp\u003eThe \u003cstrong\u003eVolvo Penta 853757 Transmission Sealing Ring\u003c\/strong\u003e is a genuine OEM internal sealing component used in compatible Volvo Penta transmission and reverse gear assemblies. Unlike external gearcase O-rings, this sealing ring is installed deeper within the mechanical drive system and is typically serviced during transmission teardown, reseal, or overhaul work.\u003c\/p\u003e\n\u003cp\u003eThis part helps maintain fluid sealing integrity around internal shaft and gear assembly areas where the Volvo Penta parts diagram calls for \u003cstrong\u003e853757\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Volvo Penta transmission sealing ring.\u003c\/li\u003e\n\u003cli\u003eVolvo Penta part number: \u003cstrong\u003e853757\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eReplaces legacy Volvo Penta part number: \u003cstrong\u003e959026\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eComponent type: \u003cstrong\u003einternal transmission \/ reverse gear sealing ring\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eUsed in compatible Volvo Penta reverse gear and internal drive assemblies.\u003c\/li\u003e\n\u003cli\u003eCommonly associated with \u003cstrong\u003eMS4B reverse gear\u003c\/strong\u003e service where listed by diagram.\u003c\/li\u003e\n\u003cli\u003eAlso referenced in heavier Volvo Penta diesel service kit contexts where specified.\u003c\/li\u003e\n\u003cli\u003eApproximate weight: \u003cstrong\u003e0.09 lb \/ 41 g\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDesigned for internal fluid sealing, shaft sealing, and transmission assembly service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eTransmission Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes Volvo Penta transmission and reverse gear assemblies where \u003cstrong\u003e853757\u003c\/strong\u003e or superseded number \u003cstrong\u003e959026\u003c\/strong\u003e is listed in the parts diagram, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta \u003cstrong\u003eMS4B reverse gear\u003c\/strong\u003e applications where specified.\u003c\/li\u003e\n\u003cli\u003eInternal shaft and gear assembly sealing locations.\u003c\/li\u003e\n\u003cli\u003eTransmission teardown and overhaul service.\u003c\/li\u003e\n\u003cli\u003eEngine-to-gear interface reseal work where the parts diagram calls for this ring.\u003c\/li\u003e\n\u003cli\u003eService kit applications where included with related Volvo Penta gasket and sealing components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this sealing ring only where the exact transmission model, engine model, serial number, and assembly diagram confirm \u003cstrong\u003e853757\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by Volvo Penta engine model, transmission model, serial number, reverse gear specification, diagram location, and companion sealing parts before ordering. Volvo Penta transmission assemblies can vary by model, production range, ratio, and prior service history.\u003c\/p\u003e\n\u003cp\u003eThis is not a universal external O-ring. It is an internal sealing component and should be matched directly to the transmission parts schematic or overhaul kit contents.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this sealing ring during transmission teardown, reverse gear overhaul, internal reseal service, or when inspection shows wear, scoring, hardening, distortion, fluid leakage, pressure loss, or damage at the sealing surface. It may also be replaced when rebuilding a transmission after slipping, contamination, overheating, fluid loss, or internal component service.\u003c\/p\u003e\n\u003cp\u003eBecause this part is installed inside the transmission assembly, it is rarely replaced during a basic oil change.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDisassemble the transmission only according to the Volvo Penta service procedure. Clean all mating surfaces, grooves, shafts, and sealing areas before installing the new ring. Inspect the related bearings, bushings, gears, clutch components, shafts, gaskets, and housing surfaces while the assembly is open.\u003c\/p\u003e\n\u003cp\u003eLubricate the sealing ring with the specified transmission fluid or assembly lubricant before installation where required. Avoid stretching, twisting, nicking, or forcing the ring into place. After reassembly, refill with the correct fluid, check for leaks, and verify proper pressure and operation according to the service manual.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRelated Service Parts \u0026amp; Kits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolvo Penta 853757\u003c\/strong\u003e — current supplied sealing ring part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolvo Penta 959026\u003c\/strong\u003e — legacy \/ superseded reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolvo Penta 876073\u003c\/strong\u003e — related gasket kit reference; verify by engine\/transmission model before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMS4B reverse gear sealing components\u003c\/strong\u003e — verify by parts diagram\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKAMD series service kit references\u003c\/strong\u003e — verify by engine serial number and kit contents\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis sealing ring should be treated as an overhaul-level transmission part, not a routine external service seal. Before ordering, confirm the exact reverse gear model and diagram location. When the transmission is already apart, it is usually smart to inspect the complete sealing package so the unit is not reassembled with one new ring and several aged companion seals.\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":43564047925284,"sku":"853757","price":105.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/447919f2-c708-46fe-a826-7537ac16b627.png?v=1781655128","url":"https:\/\/marisolmarine.com\/products\/volvo-1038","provider":"Marisol Marine Company","version":"1.0","type":"link"}