{"product_id":"24v-fuel-transfer-pump-3990106-fit-for-cummins-engine-qsb-qsb5-9-6b-5-9l","title":"24V Fuel Transfer Pump 3990106 Fit for Cummins Engine QSB QSB5.9 6B 5.9L","description":"\u003ch2\u003e24V Fuel Transfer Pump for Cummins QSB \/ QSB5.9 \/ 6B 5.9L Engine — 3990106 | Hyundai HL760-7\u003c\/h2\u003e\u003cp\u003eThe fuel transfer pump is the unsung hero of your diesel fuel system — it draws fuel from the tank and delivers it at low pressure to the injection pump, keeping the entire system primed and ready. When it fails on a Cummins QSB-powered machine, you'll face hard starts, fuel starvation under load, and eventually a no-start condition. This brand-new 24V aftermarket transfer pump is a direct replacement for part number \u003cstrong\u003e3990106\u003c\/strong\u003e and its cross-references, engineered to restore proper fuel flow to your Cummins QSB, QSB5.9, or 6B 5.9L engine. Simple to install, reliable in operation.\u003c\/p\u003e\u003ch3\u003eWhy Replace Your Fuel Transfer Pump?\u003c\/h3\u003e\u003cp\u003eA weak or failed transfer pump starves the injection pump of fuel, causing hard starts, rough running, and power loss — especially under load. It can also cause the injection pump to run dry, accelerating wear on its internal components. Replacing the transfer pump promptly is a low-cost fix that protects a much more expensive injection pump and keeps your machine productive.\u003c\/p\u003e\u003ch3\u003eCompatible Cummins Engines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCummins QSB\u003c\/li\u003e\n\u003cli\u003eCummins QSB5.9\u003c\/li\u003e\n\u003cli\u003eCummins 6B 5.9L\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Equipment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eHyundai Wheel Loader HL760-7\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eOEM Cross-Reference Part Numbers\u003c\/h3\u003e\u003cp\u003e3990106 | 4943049 | 3938368 | 4932708 | 4935731 | 5362274\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 × 24V Fuel Transfer Pump (3990106)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eKey Specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003e24V Electric Operation\u003c\/strong\u003e — Matches the electrical system of 24V construction equipment\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e100% Brand New\u003c\/strong\u003e — Not rebuilt or refurbished\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eOEM-Spec Fuel Flow\u003c\/strong\u003e — Correct flow rate and pressure to keep the injection pump primed\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eDirect Drop-In Fit\u003c\/strong\u003e — No modifications required; installs like the original\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e6 Cross-Reference Part Numbers\u003c\/strong\u003e — Easy identification across Cummins OEM numbering variants\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eProtects Your Injection Pump\u003c\/strong\u003e — Proper fuel delivery prevents dry-running damage to downstream components\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003ePlease verify your engine serial number and existing part number before ordering. Confirm your machine runs a 24V electrical system before purchasing. Contact us for fitment confirmation if needed.\u003c\/em\u003e\u003c\/p\u003e","brand":"Fuel Parts Depot","offers":[{"title":"Default Title","offer_id":47076758159516,"sku":"3990106","price":60.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0705\/7843\/8300\/files\/rpn2422011_5__1760579667_0b6c97b2-1811-4cd3-bdd2-46c200e85d18.png?v=1781688007","url":"https:\/\/fuelpartsdepot.com\/products\/24v-fuel-transfer-pump-3990106-fit-for-cummins-engine-qsb-qsb5-9-6b-5-9l","provider":"Fuel Parts Depot","version":"1.0","type":"link"}