{"product_id":"volvo-572","title":"Volvo Penta Upper Gear Core - 3804451","description":"\u003cp\u003eThe Volvo Penta \u003cstrong\u003e3804451\u003c\/strong\u003e is a genuine Volvo Penta OEM \u003cstrong\u003eupper gear case core\u003c\/strong\u003e used in select Volvo Penta sterndrive upper gear housing service applications. The upper gear case is part of the drive section that transfers power from the engine coupler and U-joint\/input shaft area into the vertical drive gear path. This is a major drive service component used where the Volvo Penta parts diagram or dealer parts system specifically calls for \u003cstrong\u003e3804451\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 factory OEM upper gear case core.\u003c\/li\u003e\n\u003cli\u003eVolvo Penta part number: \u003cstrong\u003e3804451\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMajor upper sterndrive gear housing service component.\u003c\/li\u003e\n\u003cli\u003eUsed in select Volvo Penta upper gearcase rebuild, replacement, or core-exchange service situations.\u003c\/li\u003e\n\u003cli\u003eSupports the upper drive gear path where power is transferred from the input\/U-joint area into the vertical drive system.\u003c\/li\u003e\n\u003cli\u003eFitment depends on drive model, drive serial number, gear ratio, upper housing design, and Volvo Penta service documentation.\u003c\/li\u003e\n\u003cli\u003eMay be subject to core-exchange requirements depending on supplier and ordering channel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon application context includes select Volvo Penta sterndrive assemblies by drive model, serial number, ratio, and upper gear housing configuration, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSX-A \/ SX-B\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDPS-A \/ DPS-B\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDPH\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDPR\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect gasoline and diesel Volvo Penta sterndrive packages using the matching upper gearcase core\u003c\/li\u003e\n\u003cli\u003eUpper gear housing service applications where the Volvo Penta parts system calls for \u003cstrong\u003e3804451\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this core only where the Volvo Penta parts diagram, dealer parts lookup, or service procedure specifically calls for \u003cstrong\u003e3804451\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by Volvo Penta drive serial number, exact drive model, gear ratio, upper gear housing configuration, and core-exchange requirements before ordering. Volvo Penta sterndrives can use different upper housings, gearsets, cone clutch components, shims, bearings, and seals across similar SX, DPS, DPH, and DPR drive families.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis type of core is normally considered during major upper gearcase service, drive rebuild work, or replacement after internal mechanical damage. Common reasons include damaged gearcase housing surfaces, bearing bore wear, spun bearing races, gear failure, severe corrosion, impact damage, overheating damage, or internal drive damage that cannot be corrected with normal seal, bearing, or gear replacement alone.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUpper gearcase core replacement is a precision drive-service procedure. Inspect the input shaft, vertical shaft, upper gearset, cone clutch components, bearings, bearing races, shims, seals, retainers, and mating housings before assembly. Gear backlash, bearing preload, shim stack, gear contact pattern, and seal installation must be set according to the Volvo Penta service manual using the correct tools. Do not guess shim thickness or reuse damaged bearings, races, or sealing surfaces. Pressure\/vacuum testing and final gear-lube inspection should be completed before the drive is returned to service.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3804451\u003c\/strong\u003e — Volvo Penta upper gear case core\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is not a routine wear item like a seal or gasket. An upper gear case core is usually part of a major drive repair, and the correct choice depends on the complete drive identity, gear ratio, and internal parts configuration. Before ordering, confirm whether the supplier requires a reusable core return and whether the existing housing is acceptable for exchange credit.\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":43564005294116,"sku":"3804451","price":4550.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/b9c74e30-044e-49f5-b8ad-4a6b1aaa7ff1.png?v=1781116373","url":"https:\/\/marisolmarine.com\/products\/volvo-572","provider":"Marisol Marine Company","version":"1.0","type":"link"}