{"product_id":"oil-filter-onan-47-237842","title":"Sierra 47-237842 Oil Filter – Onan Marine Generator","description":"\u003ch2\u003eSierra 47-237842 Oil Filter – Onan Marine Generator\u003c\/h2\u003e\u003cp\u003eA direct-fit replacement oil filter for compatible Onan marine generators, built to Sierra’s marine-grade specifications. Designed to maintain proper oil flow and filtration efficiency through the full service interval, this filter protects your generator’s engine from wear-causing contaminants — keeping your onboard power supply running reliably whether you’re at anchor or offshore.\u003c\/p\u003e\u003cp\u003eSierra’s marine oil filters meet or exceed OEM specifications for filtration media quality, bypass valve performance, and thread fit. Note that the Onan generator line includes multiple engine configurations requiring different filters — always verify fitment against your specific Onan generator model number and service manual before ordering.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit replacement for compatible Onan marine generators\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM filtration specifications\u003c\/li\u003e\n\u003cli\u003eQuality filtration media for effective contaminant removal\u003c\/li\u003e\n\u003cli\u003eCorrect bypass valve rating for marine generator service intervals\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest Use Case\u003c\/h3\u003e\u003cp\u003eThe right choice for boaters and liveaboards performing routine oil changes on their Onan marine generator who want a reliable, marine-rated aftermarket filter. Particularly suited to larger Onan generator models where this filter is the specified fit — confirm your generator model number before ordering, as multiple Sierra Onan filters exist for different engine configurations. A practical option for those who prefer to keep a spare filter on board for extended passages or remote cruising.\u003c\/p\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eThe Onan generator line uses several different oil filters depending on the engine model. If this SKU doesn’t match your generator, also check the \u003ca href=\"\/products\/sierra-47-237804-oil-filter-onan-marine-generator\"\u003eSierra 47-237804 Oil Filter – Onan Marine Generator\u003c\/a\u003e. For the OEM Onan filter, see the \u003ca href=\"\/products\/cummins-onan-genuine-oil-filter-185-7444\"\u003eCummins Onan Genuine Oil Filter – 185-7444\u003c\/a\u003e. For a WIX aftermarket alternative, see the \u003ca href=\"\/products\/wix-oil-filter-51344-cummins-onan-generator-185-5835\"\u003eWIX Oil Filter 51344 – Cummins Onan Generator\u003c\/a\u003e. If your generator also needs a raw water pump service, see the \u003ca href=\"\/products\/impeller-kit-onan-sierra-47-233310\"\u003eSierra 47-233310 Impeller Kit for Onan\u003c\/a\u003e or the \u003ca href=\"\/products\/impeller-kit-onan-sierra-47-233300\"\u003eSierra 47-233300 Impeller Kit for Onan\u003c\/a\u003e.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51199647547428,"sku":"47-237842","price":65.19,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47-237842.jpg?v=1785611128","url":"https:\/\/marisolmarine.com\/products\/oil-filter-onan-47-237842","provider":"Marisol Marine Company","version":"1.0","type":"link"}