{"product_id":"cummins-onan-oil-filter-185-7444","title":"Cummins Onan Genuine Oil Filter – 185-7444","description":"\u003ch2\u003eCummins Onan Genuine Oil Filter – 185-7444\u003c\/h2\u003e\u003cp\u003eThe Cummins Onan 185-7444 is a genuine spin-on engine oil filter designed for select Onan Quiet Diesel and marine generator sets. Its full-flow construction removes damaging contaminants from circulating engine oil while maintaining the lubrication needed to protect bearings and other internal components.\u003c\/p\u003e\u003cp\u003eThe filter incorporates a bypass valve that allows oil to continue circulating during cold starts or if the filter becomes excessively restricted — an important part of the Onan lubrication-system specification that helps prevent oil starvation when operating conditions temporarily limit flow through the filter media.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGenuine Cummins Onan replacement oil filter\u003c\/li\u003e\n\u003cli\u003eFull-flow spin-on design\u003c\/li\u003e\n\u003cli\u003eBuilt-in filter bypass valve\u003c\/li\u003e\n\u003cli\u003eEngineered for select Onan Quiet Diesel generators\u003c\/li\u003e\n\u003cli\u003eThread size: M20 × 1.5\u003c\/li\u003e\n\u003cli\u003eHeight: approximately 67 mm \/ 2.64 in\u003c\/li\u003e\n\u003cli\u003eOutside diameter: approximately 68.5 mm \/ 2.70 in\u003c\/li\u003e\n\u003cli\u003eCompact design for generator installations with limited clearance\u003c\/li\u003e\n\u003cli\u003eOnan Part Number: 185-7444 (also formatted as 0185-7444 and 1857444)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eGenerator Compatibility\u003c\/h3\u003e\u003cp\u003eThe Onan 185-7444 oil filter is principally associated with select Cummins Onan Quiet Diesel and marine generator models, including MDKBH, MDKBJ, MDKBW, and select related Onan QD generator configurations. Application references may also associate this filter with certain MDKAU installations. Exact compatibility depends on the complete generator model, specification letter, serial number, and installed engine configuration.\u003c\/p\u003e\u003ch3\u003eFitment Notice\u003c\/h3\u003e\u003cp\u003eConfirm the complete generator model, specification letter, and serial number from the Onan nameplate before ordering. Similar-looking MDK-series generators may use different oil filters depending on the engine version and production range. Do not select a replacement solely because it has an M20 × 1.5 thread — filter height, gasket dimensions, bypass-valve specification, and installation clearance must also match the generator’s lubrication system.\u003c\/p\u003e\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\u003cp\u003eReplace the oil filter whenever the generator oil is changed or at the maintenance interval specified in the applicable Cummins Onan operator’s manual. Earlier replacement may be appropriate following extended operation under heavy electrical load, frequent short generator cycles, fuel, coolant, water or debris contamination, long periods of seasonal storage, internal engine repairs, or abnormal oil-pressure conditions. Replace the filter immediately if its housing is dented, heavily corroded, or leaking.\u003c\/p\u003e\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\u003cp\u003eShut down the generator, allow the engine to cool, and follow the manufacturer’s service and lockout procedures before beginning work. Remove the old filter and confirm its sealing gasket has not remained on the filter head. Clean the mounting surface, lightly lubricate the replacement gasket with clean engine oil, and install by hand to the Cummins Onan tightening specification. After installation: refill with the specified oil, run the generator and confirm 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\u003eCummins Onan 185-7444 \/ 0185-7444\u003c\/li\u003e\n\u003cli\u003eFleetguard LF3925\u003c\/li\u003e\n\u003cli\u003eKubota HH150-32430 \/ HH1J0-32430\u003c\/li\u003e\n\u003cli\u003eSierra 47-237804\u003c\/li\u003e\n\u003cli\u003eWIX WL7200\u003c\/li\u003e\n\u003cli\u003eK\u0026amp;N HP-1008 \/ SO-1008\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eCummins Onan service packages may contain an Onan-, Fleetguard-, or Kubota-labelled filter carrying the corresponding factory specification. Cross-reference numbers should still be confirmed against the complete generator model and serial number before installation.\u003c\/p\u003e\u003ch3\u003eRelated Products\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\n\u003ca href=\"\/products\/wix-oil-filter-51344-cummins-onan-185-5835\"\u003eWIX Oil Filter 51344 – Cummins Onan 185-5835\u003c\/a\u003e – aftermarket alternative for a related Onan generator application\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eThe bypass valve is the detail that matters with this filter. Many compact M20 × 1.5 filters will physically thread onto the engine, but that does not mean their internal valve settings are correct for the Onan generator. Matching \u003cstrong\u003e185-7444\u003c\/strong\u003e and the complete generator nameplate is the safer approach. Note that Cummins Onan service kits for these generators may include a Fleetguard- or Kubota-branded filter carrying the same specification — this is normal and does not indicate an incorrect part.\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":43563931238436,"sku":"0185-7444","price":30.3,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/c6230037-47d6-4f01-9670-5eadf0f0142c.png?v=1784323156","url":"https:\/\/marisolmarine.com\/products\/cummins-onan-oil-filter-185-7444","provider":"Marisol Marine Company","version":"1.0","type":"link"}