{"product_id":"mercury-mercruiser-driven-gear-bearing-fits-bravo-i-ii-iii-x-xr-xz-31-861787","title":"Mercury – Driven Gear Bearing | Bravo Series Sterndrive Component | Precision-Machined Steel | 861787","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury – Driven Gear Bearing | Bravo Series Sterndrive Component | Precision-Machined Steel | 861787\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOverview\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e There’s a certain comfort that comes from knowing the heart of your sterndrive \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eis built\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e on strong, dependable parts.\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e When you’re trimming up and heading onto \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eplane\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, or easing into a tight marina slip with currents pushing at you, the last thing you want is uncertainty in your drive system. A solid, smooth-running gear set can make the entire boat feel more predictable and more responsive.\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e That’s \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eexactly\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e the kind of confidence the Mercury Marine part number 861787 Driven Gear Bearing brings—quiet, steady reliability that lets you focus on the experience, not the equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eKey Features\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eComplete driven gear bearing assembly ready for installation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePrecision-machined steel construction for strength and longevity\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eDesigned specifically\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e for MerCruiser Bravo sterndrive gear systems\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngineered for smooth, consistent rotation under heavy load\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eBuilt to Mercury Marine OEM specifications for exact fit and performance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eSuitable for model year 2000 and newer (serial number 0M100001 and above)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFor MerCruiser Bravo I, Bravo II, Bravo III, Bravo X, Bravo XR, and Bravo XZ sterndrives\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIdeal for high-performance boats, cruisers, offshore sport boats, tow boats, and multipurpose family vessels\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFits MerCruiser sterndrive systems using Bravo gear housings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWorks across a wide range of horsepower setups, from recreational to performance builds\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eAlways verify fitment using your service or owner’s manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e A sterndrive’s internal bearings carry tremendous responsibility. They support rotating loads, transfer torque, and endure constant pressure—whether you’re running offshore chop or idling along a quiet shoreline. The 861787 Driven Gear Bearing \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eis built\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e to shoulder that load without hesitation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOnce installed, you’ll notice how the drive feels tighter and more predictable. Shifts become smoother. Handling feels more controlled. The rotation through the gear assembly gains a clean, quiet steadiness that only a fresh, correctly machined bearing can deliver. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThis\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e isn’t the kind of change you only feel at wide-open throttle—it improves the overall rhythm of running the boat.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eBecause this bearing \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eis made\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e to Mercury Marine’s exacting standards, it fits cleanly into place with no fuss. The alignment is \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eright\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e. The tolerances are correct. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEverything seats the way it should, \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003egiving you\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e a secure, factory-level \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003einstall\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e without guesswork.\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e And once it’s in, the durability speaks for itself. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMarine environments—\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eheat\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, vibration, \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003emoisture\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e—are \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003etough\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e on internal components, but this bearing is built for the long haul, holding steady through years of real-world conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhy Buy OEM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e When it comes to Bravo sterndrives, cutting corners on internal parts is a costly gamble. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eAftermarket bearings \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003emight\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e look similar, but slight differences in machining, load tolerances, or materials can \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ecreate\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e noise, premature wear, or \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eworse—\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003edamage to the gear set.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eChoosing a Mercury Marine OEM component \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003elike\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e part number 861787 means you’re installing a piece engineered \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eexactly\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e for the task.\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIt’\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003es designed\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e to handle the torque, \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ethe\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e heat, and \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ethe\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e constant load your drive system produces.\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIt installs \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eright\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e the first time, performs \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ecorrectly\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, and offers long-term peace of mind.\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eAs any seasoned boater will tell \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eyou\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e:\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e inside a sterndrive\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, precision is everything.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFAQ\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ1: Which Mercury engines or systems does the Driven Gear Bearing 861787 fit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e fits MerCruiser Bravo I, II, III, X, XR, and XZ sterndrives from model year 2000 and newer.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2: What makes this part different from aftermarket options?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e OEM bearings are machined to Mercury Marine’s exact standards, ensuring proper load distribution, smooth rotation, and reliable longevity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ3: How can I confirm this is the right part for my setup?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMatch your sterndrive model and serial number with your owner’s or service manual \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003erecommendations\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Can this bearing be used in both freshwater and saltwater boats?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Yes. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIt’s engineered\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e for corrosion resistance and long-term performance in any marine environment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ5: Is installation straightforward for most boat owners?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eInstallation requires mechanical \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eexperience\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e and proper tools, but the part itself is a direct OEM fit \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ewith\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e no modifications \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eneeded\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46940735045923,"sku":"31-861787","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/861787_main.jpg?v=1760631263","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-mercruiser-driven-gear-bearing-fits-bravo-i-ii-iii-x-xr-xz-31-861787","provider":"PartsVu","version":"1.0","type":"link"}