{"product_id":"fleece-powerflo-in-tank-fuellift-pump-fpe-34564-2011-2016-6-6l-duramax-lml-long-bed","title":"FLEECE POWERFLO IN-TANK FUELLIFT PUMP FPE-34564 | 2011-2016 6.6L DURAMAX LML (LONG BED)","description":"\u003cp\u003eUpgrade the fuel delivery system in your GM 6.6L Duramax LML with the Fleece Performance PowerFlo Lift Pump. Designed as a direct in-tank replacement for the factory pump, the PowerFlo provides increased fuel flow to support applications producing up to approximately \u003cstrong\u003e800 horsepower\u003c\/strong\u003e while maintaining a clean, factory-style installation.\u003c\/p\u003e\n\n\u003cp\u003eThe PowerFlo utilizes \u003cstrong\u003edual OEM-quality gerotor pumps\u003c\/strong\u003e to provide consistent fuel delivery and increased reliability compared to the factory pump. The additional flow capacity makes the system suitable for higher-horsepower applications, including compatible dual CP3 configurations.\u003c\/p\u003e\n\n\u003cp\u003eBecause the PowerFlo installs inside the factory fuel tank, it retains the \u003cstrong\u003efactory fuel lines\u003c\/strong\u003e and integrates with the existing fuel system without requiring a frame-mounted pump, tank sump, or draw straw. Fleece's active fill bucket technology maintains fuel around the pumps and helps eliminate the quarter-tank fuel delivery issues commonly associated with some aftermarket lift pump systems.\u003c\/p\u003e\n\n\u003cp\u003eFor custom fuel system configurations, the pump outlet and return ports are threaded to accept \u003cstrong\u003e-8 O-ring fittings with 3\/4\"-16 threads\u003c\/strong\u003e. This allows custom fuel lines or aftermarket filtration components to be incorporated while retaining the benefits of the in-tank PowerFlo pump.\u003c\/p\u003e\n\n\u003cp\u003eThe PowerFlo is designed for straightforward installation and is backed by the Fleece Performance Lifetime Warranty according to current warranty terms.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect in-tank replacement\u003c\/strong\u003e – Replaces the factory lift pump while maintaining a clean OEM-style installation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual gerotor pumps\u003c\/strong\u003e – Uses two OEM-quality pumps for increased flow capacity and reliability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupports up to approximately 800 HP\u003c\/strong\u003e – Provides increased fuel delivery for high-performance applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual CP3 compatible\u003c\/strong\u003e – Designed to provide sufficient fuel supply for compatible dual CP3 configurations\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActive fill bucket technology\u003c\/strong\u003e – Helps maintain consistent fuel supply without a tank sump or draw straw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelps eliminate quarter-tank issues\u003c\/strong\u003e – Designed for reliable fuel delivery at lower tank levels\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRetains factory fuel lines\u003c\/strong\u003e – Integrates with the existing vehicle fuel system\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo sump or draw straw required\u003c\/strong\u003e – Simplifies installation compared to many frame-mounted systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustom fuel system compatible\u003c\/strong\u003e – Outlet and return ports accept -8 O-ring fittings with 3\/4\"-16 threads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAftermarket filtration compatible\u003c\/strong\u003e – Allows custom fuel lines and filtration components to be incorporated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBiodiesel compatible\u003c\/strong\u003e – Validated for use with fuel blends containing up to 20% biodiesel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLifetime warranty\u003c\/strong\u003e – Backed by Fleece Performance according to current warranty terms\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump Type:\u003c\/strong\u003e Dual Gerotor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Capability:\u003c\/strong\u003e Up to Approximately 800 HP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Pressure:\u003c\/strong\u003e 10–13 PSI at Idle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation Location:\u003c\/strong\u003e In-Tank\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutlet\/Return Port:\u003c\/strong\u003e -8 O-Ring Compatible, 3\/4\"-16 Thread\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel Tank Configuration:\u003c\/strong\u003e Single Tank Only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBiodiesel Compatibility:\u003c\/strong\u003e Up to B20\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplication Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eFor use with single fuel tank configurations only.\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesigned for pickup-style trucks.\u003c\/strong\u003e Cab \u0026amp; Chassis applications require verification of the correct pump part number.\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eNot compatible with S\u0026amp;B aftermarket fuel tanks.\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003eFor use with Titan aftermarket fuel tanks, reference current Fleece Performance fitment information.\u003c\/li\u003e\n  \u003cli\u003eFleece recommends using the FPE-DMAX-HFFBA-1116 Auxiliary Heated Fuel Filter Kit with the PowerFlo Lift Pump.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRecommended Fuel Filter Upgrade\u003c\/h3\u003e\n\u003cp\u003eThe optional Fleece FPE-DMAX-HFFBA-1116 Auxiliary Heated Fuel Filter Kit replaces the factory fuel filter housing with an upgraded filter base featuring an integral high-flow fuel heater, Water-In-Fuel sensor provision, and Donaldson spin-on canister-style fuel filter. It mounts in the factory location and is designed to provide increased fuel heating and filtration capacity for demanding applications and cold-weather operation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e GM 6.6L Duramax LML Pickup Trucks\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e FPE-34564\u003c\/p\u003e","brand":"Fleece Performance Engineering","offers":[{"title":"Default Title","offer_id":54078056202523,"sku":"FPE-34564","price":799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2026-10-01at3.37.36PM.png?v=1790928710","url":"https:\/\/wwmperformance.com\/products\/fleece-powerflo-in-tank-fuellift-pump-fpe-34564-2011-2016-6-6l-duramax-lml-long-bed","provider":"WWM Performance","version":"1.0","type":"link"}