{"product_id":"crusader-oil-cooler-hose-assembly-ra045103d","title":"Crusader Oil Cooler Hose Assembly 6.5\"–10\" | OEM Part RA045103D","description":"\u003ch2\u003eCrusader Oil Cooler Hose Assembly 6.5\"–10\" — OEM Part RA045103D\u003c\/h2\u003e\n\n\u003cp\u003eGenuine Crusader OEM oil cooler hose assembly for compatible Crusader marine inboard engines. This hose assembly connects the engine to the oil cooler, routing engine oil through the cooler to maintain proper oil temperature under load. The assembly is sized at 6.5\"–10\" and is the correct OEM replacement for compatible Crusader oil cooling system configurations.\u003c\/p\u003e\n\n\u003ch2\u003ePart Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RA045103D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Crusader\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial Product Type:\u003c\/strong\u003e Oil Cooler Hose Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Range:\u003c\/strong\u003e 6.5\"–10\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Engine Lubrication — Oil Cooling Circuit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible Crusader marine inboard engines where the parts diagram specifies oil cooler hose assembly RA045103D\u003c\/li\u003e\n\u003cli\u003eAlways confirm fitment by engine model, serial number, and parts diagram before ordering — oil cooler hose specifications vary by engine family and oil cooler configuration\u003c\/li\u003e\n\u003cli\u003eFor related oil line hose assemblies, see \u003ca href=\"\/products\/crusader-oil-line-hose-6-0l-ra045155\"\u003eCrusader Oil Line Hose 6.0L — RA045155\u003c\/a\u003e and \u003ca href=\"\/products\/crusader-oil-line-hose-5-7l-6-0l-ra045155a\"\u003eCrusader Oil Line Hose 5.7L\/6.0L — RA045155A\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSerial Number \u0026amp; Fitment Notice\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment using your Crusader engine serial number and the corresponding parts diagram. Oil cooler hose specifications vary by engine family and oil cooler configuration. Do not assume fitment based on hose length alone.\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVisible cracking, swelling, or deterioration of the hose body\u003c\/li\u003e\n\u003cli\u003eOil leaks at the hose connections or along the hose body\u003c\/li\u003e\n\u003cli\u003eHose is soft, spongy, or collapsing under pressure\u003c\/li\u003e\n\u003cli\u003eHose end fittings are corroded, damaged, or leaking\u003c\/li\u003e\n\u003cli\u003ePreventative replacement during oil cooler service on high-hour engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect annually for cracking, swelling, softness, and oil leaks\u003c\/li\u003e\n\u003cli\u003eReplace immediately if leaks, cracking, or deterioration are found\u003c\/li\u003e\n\u003cli\u003eReplace during oil cooler replacement or any service that requires disconnecting the oil cooler hose circuit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the oil cooler and engine fittings for corrosion or damage before installing the new hose assembly\u003c\/li\u003e\n\u003cli\u003eEnsure hose end connections are fully seated and clamps or fittings are torqued to the specification in the Crusader service manual\u003c\/li\u003e\n\u003cli\u003eCheck for oil leaks at all connections after the engine reaches operating temperature\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between RA045103D and RA045155 \/ RA045155A?\u003c\/strong\u003e\u003cbr\u003eRA045103D is the oil cooler hose assembly (6.5\"–10\") connecting the engine to the oil cooler. RA045155 and RA045155A are oil line hose assemblies for 6.0L and 5.7L\/6.0L engines respectively. These are different hose assemblies for different positions in the oil cooling circuit. Confirm the correct part number for your specific application using the engine parts diagram.\u003c\/p\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e RA045103D is the correct OEM replacement for Crusader inboard owners replacing a deteriorated or leaking oil cooler hose assembly. It is particularly well-suited for high-hour engines where rubber hose assemblies are being replaced as part of a preventative maintenance program, or during oil cooler replacement where the existing hose is found to be in poor condition.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Customer Issue:\u003c\/strong\u003e The most frequent issue is confusing the oil cooler hose assembly with the oil line hose assemblies (RA045155 \/ RA045155A). These are different components in different positions in the oil cooling circuit. Always confirm the correct part number using the engine parts diagram before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/crusader-oil-line-hose-6-0l-ra045155\"\u003eCrusader Oil Line Hose 6.0L — RA045155\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/crusader-oil-line-hose-5-7l-6-0l-ra045155a\"\u003eCrusader Oil Line Hose 5.7L\/6.0L — RA045155A\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/fairview-191\"\u003ePCM \/ Crusader Combination Oil Cooler 8.1L — R147035A\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/crusader-oil-cooler-mounting-bracket-r090013a\"\u003eCrusader Oil Cooler Mounting Bracket — R090013A\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/crusader-pcm-oil-filter-gasket-r077001\"\u003eCrusader \/ PCM Oil Filter with Gasket — R077001\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CRU","offers":[{"title":"Default Title","offer_id":43563780931620,"sku":"RA045103D","price":86.52,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/9714cb03-5bf6-4d19-84ef-7d4cb3f2680e.png?v=1787451060","url":"https:\/\/marisolmarine.com\/products\/crusader-oil-cooler-hose-assembly-ra045103d","provider":"Marisol Marine Company","version":"1.0","type":"link"}