{"product_id":"merc-876","title":"Mercury MerCruiser Quicksilver Port Power Trim Hose 864959 | 32-864959 Alpha One R MR","description":"\u003ch2\u003eMercury \/ Quicksilver OEM Port Power Trim Hose — Part No. 864959 \/ 32-864959\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e864959 \/ 32-864959\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMercury Marine \/ Quicksilver\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eHydraulic Power Trim Hose\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSide\u003c\/th\u003e\n\u003ctd\u003ePort (left)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eHydraulic Circuit\u003c\/th\u003e\n\u003ctd\u003eDown-pressure\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003ctd\u003eTrim cylinder to connector block\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003eApprox. 11-1\/2 in. \/ 292 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eIndividually\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eUPC \/ GTIN\u003c\/th\u003e\n\u003ctd\u003e745061565944\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSupersedes\u003c\/th\u003e\n\u003ctd\u003e32-999031 \/ 32-99903-1 (earlier Mercury reference)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAbout This Part\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e864959 \/ 32-864959\u003c\/strong\u003e is a genuine Mercury Marine \/ Quicksilver OEM hydraulic hose that carries fluid between the trim cylinder and connector block on the \u003cstrong\u003eport (left) side\u003c\/strong\u003e of MerCruiser R, MR, Alpha One, and Alpha One Gen II sterndrive trim systems. It operates in the \u003cstrong\u003edown-pressure circuit\u003c\/strong\u003e — the side of the hydraulic loop that pushes the drive down when trimming in. Any leak or failure in this hose will result in loss of trim pressure and prevent proper drive operation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCritical distinction:\u003c\/strong\u003e This is the \u003cstrong\u003eport-side\u003c\/strong\u003e hose only. The matching starboard-side hose is \u003cstrong\u003e864960 \/ 32-864960\u003c\/strong\u003e. Although the two hoses are nearly identical in appearance and length, they are position-specific and should not be swapped.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cp\u003eConfirm the drive model, transom assembly, trim-cylinder configuration, and hose position before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eR Drive\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMR Drive\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlpha One (Gen I)\u003c\/strong\u003e — 1983–1990\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlpha One Gen II\u003c\/strong\u003e — 1991 and later\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEarlier part number \u003cstrong\u003e32-999031\u003c\/strong\u003e was used across R, MR, Alpha One, and Alpha One Gen II applications and is fully superseded by 864959.\u003c\/p\u003e\n\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHydraulic fluid leaking from the hose body, fittings, or crimped ends\u003c\/li\u003e\n  \u003cli\u003eCracked, hardened, or deteriorated hose material\u003c\/li\u003e\n  \u003cli\u003eCorroded or damaged fittings\u003c\/li\u003e\n  \u003cli\u003eVisible abrasion, chafing, or kinking\u003c\/li\u003e\n  \u003cli\u003eDeformed or collapsed hose\u003c\/li\u003e\n  \u003cli\u003eLoss of trim-down pressure traced to the port hose\u003c\/li\u003e\n  \u003cli\u003eDamage discovered during trim-cylinder or transom assembly service\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAny hydraulic leak in the trim system should be corrected before continued use — operating the drive with low hydraulic fluid can cause pump and cylinder damage.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRelieve trim-system hydraulic pressure before disconnecting any hose, per the MerCruiser service procedure\u003c\/li\u003e\n  \u003cli\u003eConfirm the replacement hose is installed on the \u003cstrong\u003eport side\u003c\/strong\u003e in the down-pressure position\u003c\/li\u003e\n  \u003cli\u003eInspect the starboard hose \u003cstrong\u003e864960\u003c\/strong\u003e at the same time — if one hose is deteriorated, the other likely is too\u003c\/li\u003e\n  \u003cli\u003eCheck trim-cylinder fittings and the connector block for wear, corrosion, or thread damage\u003c\/li\u003e\n  \u003cli\u003eRoute the hose exactly as the original to prevent chafing against the drive housing or pinching during trim movement\u003c\/li\u003e\n  \u003cli\u003eRefill the trim reservoir and bleed the hydraulic system per the service manual\u003c\/li\u003e\n  \u003cli\u003eOperate the drive through its full trim range and inspect all connections for leaks before returning to service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCross-Reference \/ Alternate Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e864959\u003c\/strong\u003e — primary SKU (this item)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e32-864959\u003c\/strong\u003e — Mercury-prefixed number\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e32-999031 \/ 32-99903-1\u003c\/strong\u003e — earlier Mercury number, superseded by 864959\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSierra 18-2115\u003c\/strong\u003e — aftermarket cross-reference\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGLM 26240\u003c\/strong\u003e — aftermarket cross-reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e864960 \/ 32-864960\u003c\/strong\u003e — starboard-side down-pressure trim hose (companion to this part)\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/8131431530532\"\u003eMercury MerCruiser Trim Cylinder O-Ring Kit 87400A2\u003c\/a\u003e — trim cylinder seal kit for Alpha One and R\/MR drive trim systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe most common ordering issue on trim hoses is not knowing which side is needed. \u003cstrong\u003e864959 is the port (left) side\u003c\/strong\u003e — standing at the stern looking forward, port is the left. If both hoses are being replaced at the same time (which we recommend whenever the trim system is open), you’ll need \u003cstrong\u003e864960\u003c\/strong\u003e for the starboard side as well. We also frequently see customers replace only the leaking hose without inspecting the trim cylinder seals — if the hose has failed from age or heat, the cylinder o-rings are worth checking at the same time to avoid pulling the system apart twice.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563897684004,"sku":"864959","price":107.4,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/1c807503-946e-4c53-9d26-9e1a4db2136b.png?v=1789416968","url":"https:\/\/marisolmarine.com\/products\/merc-876","provider":"Marisol Marine Company","version":"1.0","type":"link"}