{"product_id":"cummins-3990105-fuel-transfer-pump-12v-isb-5-9l","title":"Cummins 3990105 Fuel Transfer Pump – 12V, ISB 5.9L","description":"\u003cp\u003eThe Cummins 3990105 is a genuine Cummins 12-volt electric fuel transfer pump (catalog description: Fuel Transfer Pump), also called a lift pump. It draws fuel from the tank and pushes it through the fuel filter to the injection pump at a steady supply pressure, so the injection pump is never starved of fuel. It is listed for Cummins ISB 5.9L engines on 12-volt systems, including Dodge Ram applications, and has since been superseded by Cummins 4943048 and then 5362273.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eCummins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e3990105\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart Type\u003c\/th\u003e\n\u003ctd\u003eFuel transfer pump (lift pump)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOEM Description\u003c\/th\u003e\n\u003ctd\u003eFuel Transfer Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSuperseded By\u003c\/th\u003e\n\u003ctd\u003eCummins 4943048, later 5362273\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEngine\u003c\/th\u003e\n\u003ctd\u003eCummins ISB 5.9L (12-volt systems)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCondition\u003c\/th\u003e\n\u003ctd\u003eNew, genuine Cummins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003e1 pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eCross References\u003c\/h2\u003e\u003cp\u003eThis part replaces or is equivalent to the following part numbers:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCummins:\u003c\/strong\u003e 4943048\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCummins:\u003c\/strong\u003e 5362273\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterstate-McBee:\u003c\/strong\u003e M-4943048\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCummins ISB 5.9L engines with a 12-volt electrical system\u003c\/li\u003e\n\u003cli\u003eDodge Ram trucks with the 5.9L Cummins ISB (sellers list 1998–2002 for the 4943048 replacement)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSigns It Needs Replacing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHard starting, long cranking or a no-start, especially after the truck has been sitting\u003c\/li\u003e\n\u003cli\u003eLoss of power, stumbling or surging under load from low fuel supply\u003c\/li\u003e\n\u003cli\u003eNo pump hum when the key is turned on\u003c\/li\u003e\n\u003cli\u003eLow fuel supply pressure at the filter head or injection pump inlet. Low supply pressure also shortens injection pump life.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDisconnect the batteries and relieve fuel pressure before removing the old pump.\u003c\/li\u003e\n\u003cli\u003eUse new sealing washers on the fuel fittings and inspect the fuel lines, wiring connector, fuse and relay. A corroded connector is a common cause of a dead pump.\u003c\/li\u003e\n\u003cli\u003eTorque the mounting bolts and fittings to Cummins specification.\u003c\/li\u003e\n\u003cli\u003ePrime the fuel system, check every connection for leaks and confirm supply pressure meets Cummins specification.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003ePlease verify fitment with the OEM using your VIN or engine serial number (ESN) before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Cummins","offers":[{"title":"Default Title","offer_id":67955105726749,"sku":"3990105","price":473.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/0730\/1991\/files\/placeholder-logo-cummins.png?v=1793732832","url":"https:\/\/www.allprodiesel.net\/products\/cummins-3990105-fuel-transfer-pump-12v-isb-5-9l","provider":"All Pro Truck Parts","version":"1.0","type":"link"}