{"product_id":"mallory-9-57825-marine-oil-filter-gm-mercruiser","title":"Mallory 9-57825 Marine Oil Filter – GM MerCruiser, Crusader \u0026 OMC","description":"\u003ch2\u003eMallory 9-57825 Marine Oil Filter – GM MerCruiser, Crusader \u0026amp; OMC\u003c\/h2\u003e\u003cp\u003eThe Mallory Marine 9-57825 is a short-format, full-flow spin-on oil filter for select GM-based sterndrive and inboard marine engines. It is commonly associated with GM 3.0L four-cylinder engines, numerous GM V8 applications, and V6 engines equipped with a remote oil-filter system.\u003c\/p\u003e\u003cp\u003eMallory 9-57825 cross-references to the current Quicksilver 35-866340Q03 and Sierra 18-7824-2 marine oil filters. These replacements are engineered for marine service with corrosion-resistant construction, high-efficiency filtration media, and an anti-drainback valve that helps retain oil for faster lubrication during startup.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eShort-format marine spin-on oil filter\u003c\/li\u003e\n\u003cli\u003eFull-flow engine lubrication service\u003c\/li\u003e\n\u003cli\u003eDesigned for select GM-based marine engines\u003c\/li\u003e\n\u003cli\u003eCommon 13\/16\"-16 mounting thread\u003c\/li\u003e\n\u003cli\u003eSuitable for installations with restricted filter clearance\u003c\/li\u003e\n\u003cli\u003eAnti-drainback valve on current replacement equivalents\u003c\/li\u003e\n\u003cli\u003eMarine-grade corrosion-resistant construction\u003c\/li\u003e\n\u003cli\u003eCross-references to current Mercury, Quicksilver, and Sierra filters\u003c\/li\u003e\n\u003cli\u003eLegacy Mallory part number: 9-57825\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eEngine Compatibility\u003c\/h3\u003e\u003cp\u003eCommon applications include select:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 3.0L GM181 inline four-cylinder engines\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.0L GM305 V8 engines\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.7L GM350 V8 engines\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6.2L GM377 engines\u003c\/li\u003e\n\u003cli\u003eMerCruiser 7.4L GM454 V8 engines\u003c\/li\u003e\n\u003cli\u003eMerCruiser 8.1L GM496 engines\u003c\/li\u003e\n\u003cli\u003eMerCruiser 8.2L GM502 engines\u003c\/li\u003e\n\u003cli\u003eMerCruiser V6 engines equipped with a remote oil-filter mount\u003c\/li\u003e\n\u003cli\u003eMercury Marine-manufactured 4.5L and 6.2L engines\u003c\/li\u003e\n\u003cli\u003eSelect Crusader, Indmar, PCM, OMC, and Volvo Penta GM-based marine engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe equivalent Quicksilver filter is specified for MerCruiser sterndrive and inboard engines except V6 models with the filter mounted directly on the engine block.\u003c\/p\u003e\u003ch3\u003eFitment Notice\u003c\/h3\u003e\u003cp\u003eConfirm the engine model, serial number, filter location, and number printed on the existing filter before ordering. This filter is commonly used on GM V6 engines \u003cstrong\u003eonly when a remote oil-filter system is installed\u003c\/strong\u003e — V6 engines with the filter mounted directly to the engine block generally require a different filter. Filter requirements can also vary by engine year, marinizer, and remote-filter configuration. Do not select the filter by its 13\/16\"-16 thread alone — the gasket diameter, body length, internal valve arrangement, and available installation clearance must also match.\u003c\/p\u003e\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\u003cp\u003eReplace the oil filter whenever the engine oil is changed or at the service interval specified in the marine engine owner’s manual. Earlier replacement may be appropriate following extended trolling or low-speed operation, heavy-load or high-temperature use, fuel, water or coolant contamination, long periods of seasonal storage, internal engine repairs, abnormal oil-pressure conditions, or visible corrosion, denting, or leakage.\u003c\/p\u003e\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\u003cp\u003eRemove the old filter and confirm its sealing gasket has not remained on the filter head. Clean the sealing surface and compare the replacement filter’s thread, gasket, and body length with the removed filter. Lightly coat the new gasket with clean engine oil and install by hand to the manufacturer’s tightening specification — do not overtighten. After installation: refill with the specified oil, start the engine and verify normal oil pressure, inspect for leakage, shut down and allow oil to settle, then recheck and correct the oil level.\u003c\/p\u003e\u003ch3\u003eCross-Reference Numbers\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMallory 9-57825 \/ 9-57801\u003c\/li\u003e\n\u003cli\u003eSierra 18-7824-2\u003c\/li\u003e\n\u003cli\u003eWIX 51086\u003c\/li\u003e\n\u003cli\u003eBaldwin B27\u003c\/li\u003e\n\u003cli\u003eQuicksilver 35-866340Q03 \/ 35-866340Q02 \/ 35-802885Q\u003c\/li\u003e\n\u003cli\u003eMercury 35-866340K01 \/ 35-802885T\u003c\/li\u003e\n\u003cli\u003eMercury MerCruiser 14957 \/ 32716 \/ 32717 \/ 52022 \/ 52731 \/ 52731A1 \/ 54111\u003c\/li\u003e\n\u003cli\u003eOMC 173232 \/ 502902 \/ 778864\u003c\/li\u003e\n\u003cli\u003eCrusader 201104\u003c\/li\u003e\n\u003cli\u003eIndmar 50-1001 \/ 872023\u003c\/li\u003e\n\u003cli\u003ePleasurecraft R077002\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 3852030 \/ 3852412 \/ 835440\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSierra officially lists 18-7824-2 as a replacement for Mallory 9-57825 and the related Mercury, Quicksilver, OMC, Crusader, Indmar, Pleasurecraft, and Volvo Penta numbers. Cross-reference numbers are comparison aids only — confirm the original application before substituting brands.\u003c\/p\u003e\u003ch3\u003eOther Marine Oil Filters\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wix-oil-filter-51061-gm-tall-marine\"\u003eWIX Oil Filter 51061 – GM Tall Marine (MerCruiser, OMC, Crusader)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wix-oil-filter-51083-mercury-mariner\"\u003eWIX Oil Filter 51083 – Mercury \u0026amp; Mariner Outboards\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wix-oil-filter-51515-ford\"\u003eWIX Oil Filter 51515 – Ford Marine\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wix-oil-filter-51806\"\u003eWIX Oil Filter 51806\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eThe important distinction is not simply “GM engine.” This short filter works across many GM four-cylinder and V8 marine applications, but GM V6 engines generally require it \u003cstrong\u003eonly when equipped with a remote filter mount\u003c\/strong\u003e — checking the existing filter location is usually the quickest way to avoid the wrong replacement. The extensive MerCruiser, OMC, Crusader, Indmar, and Volvo Penta cross-references above make this one of the most broadly applicable GM marine oil filters in the catalog.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada-wide shipping. ⚓\u003c\/p\u003e","brand":"MISC.","offers":[{"title":"Default Title","offer_id":43563933368356,"sku":"9-57825","price":8.52,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/images_86bb2308-fc88-4c61-b9b9-ca53b9a77f0b.jpg?v=1784322026","url":"https:\/\/marisolmarine.com\/products\/mallory-9-57825-marine-oil-filter-gm-mercruiser","provider":"Marisol Marine Company","version":"1.0","type":"link"}