{"product_id":"merc-721","title":"Mercury Black Max Propeller 9x9 828156A12","description":"\u003cp\u003eMercury MerCruiser Quicksilver 828156A12 is a genuine \u003cstrong\u003eBlack Max\u003c\/strong\u003e aluminum propeller in a \u003cstrong\u003e9\" diameter x 9\" pitch\u003c\/strong\u003e, \u003cstrong\u003eright-hand rotation\u003c\/strong\u003e, \u003cstrong\u003e3-blade\u003c\/strong\u003e configuration. Mercury describes the Black Max family as its versatile, value-focused aluminum prop line, built from patented \u003cstrong\u003eMercalloy\u003c\/strong\u003e for durability and dependable all-around performance. Current part-specific references for 828156A12 identify it as the \u003cstrong\u003e9 x 9 RH\u003c\/strong\u003e version for small-horsepower Mercury and Mariner outboards.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury Black Max propeller, part number \u003cstrong\u003e828156A12\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e9\" diameter x 9\" pitch\u003c\/strong\u003e, \u003cstrong\u003eright-hand rotation\u003c\/strong\u003e, \u003cstrong\u003e3 blades\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eAluminum construction using Mercury's patented \u003cstrong\u003eMercalloy\u003c\/strong\u003e alloy.\u003c\/li\u003e\n\u003cli\u003eCurrent part-specific listings show an \u003cstrong\u003e8-tooth spline\u003c\/strong\u003e with a \u003cstrong\u003eFlo-Torq I round rubber hub \/ rubber-bushed hub\u003c\/strong\u003e already installed.\u003c\/li\u003e\n\u003cli\u003eBlack Max props are positioned by Mercury as reliable, durable, and easy to maintain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCurrent part-specific references commonly associate 828156A12 with \u003cstrong\u003eMercury and Mariner 6 HP, 8 HP, 9.9 HP, and 15 HP TwoStroke outboards\u003c\/strong\u003e, \u003cstrong\u003e9.9 HP FourStroke (1995-2004)\u003c\/strong\u003e, \u003cstrong\u003e15 HP FourStroke (through 2007)\u003c\/strong\u003e, and \u003cstrong\u003eSeaPro \/ Marathon 10-15 HP\u003c\/strong\u003e applications. The strongest supportable match is by \u003cstrong\u003eprop shaft spline, hub style, and current prop setup\u003c\/strong\u003e rather than by horsepower alone.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eVerify fitment by \u003cstrong\u003eengine serial number\u003c\/strong\u003e, \u003cstrong\u003egearcase\u003c\/strong\u003e, \u003cstrong\u003eprop shaft spline\u003c\/strong\u003e, and \u003cstrong\u003ehub style\u003c\/strong\u003e before ordering. With 828156A12, the important checks are the exact \u003cstrong\u003e9 x 9 RH\u003c\/strong\u003e dimensions, the \u003cstrong\u003e8-tooth spline\u003c\/strong\u003e, and the correct \u003cstrong\u003erubber-hub small-outboard application\u003c\/strong\u003e, especially when several Mercury props can look similar while using different hubs or shaft setups.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace the propeller when blades are bent, chipped, cracked, badly worn, or when the current prop no longer delivers the correct RPM and load performance for the boat. Because Black Max is Mercury's practical all-around aluminum prop family, it is a common replacement choice when you want OEM-style fit, dependable service, and straightforward repairability.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm the correct \u003cstrong\u003e8-tooth spline\u003c\/strong\u003e and \u003cstrong\u003erubber hub\u003c\/strong\u003e setup before installation. Current listings for 828156A12 show the hub already installed, but it is still important to match the prop against the exact engine application and verify smooth fit on the shaft before final tightening. After installation, prop choice should be checked against the engine's recommended WOT RPM range under normal boat load.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCurrent seller references show \u003cstrong\u003e42522A10\u003c\/strong\u003e, \u003cstrong\u003e42522A11\u003c\/strong\u003e, \u003cstrong\u003e42522A12\u003c\/strong\u003e, and \u003cstrong\u003e828156A45\u003c\/strong\u003e as earlier or superseded related OEM numbers connected to \u003cstrong\u003e828156A12\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe easy mistake with this prop is ordering by diameter and pitch only. For 828156A12, the better match is \u003cstrong\u003e9 x 9 RH + 8-tooth spline + rubber-hub small-outboard application\u003c\/strong\u003e, because that combination matters more than the size stamp alone when you want the boat to run properly.\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":"MERC","offers":[{"title":"Default Title","offer_id":43563883560996,"sku":"828156A12","price":228.39,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/77273604-4ce1-4611-be2e-c48c62607feb_8b922d12-a344-4b0c-8d6f-7c0a63ccd1df.png?v=1776734879","url":"https:\/\/marisolmarine.com\/products\/merc-721","provider":"Marisol Marine Company","version":"1.0","type":"link"}