{"product_id":"spool-f-series-s55-high-performance-fuel-pump-stage-3-stage-4-900whp","title":"SPOOL F-Series S55 High Performance Fuel Pump - Stage 3 \u0026 Stage 4 - 900WHP+","description":"\u003cdiv\u003e\n\u003ch2\u003e\u003cspan\u003eSpool Performance S55 High-Performance Fuel Pump Kits\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eGive your S55 the fuel supply it needs as power levels climb. The \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSpool Performance F-Series S55 Fuel Pump Kits\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e support everything from pump gas to full E85, with two stages to match your build.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEach kit pairs an OEM brushless pump inside the factory-style bucket with an auxiliary pump mounted inside.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eKits include a fuel level sending unit (OEM FUEL PUMP), plug-and-play wiring, and a boost-activated switch that brings the auxiliary pump online at \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e10 psi or you can choose ReFlex ground activation harness. \u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003eNo cutting, splicing, or crimping required, and \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eno core charge\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eStage 3 — Up to 900 WHP\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eA straightforward fuel supply upgrade for an S55 running more boost and higher ethanol content. Stage 3 combines the OEM brushless pump with a \u003cstrong\u003eDW420 in the bucket (EASY INSTALL).\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePower support:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Up to 900 WHP, or 850 WHP on full E85\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWhat’s included:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eGenuine OEM fuel pump bucket assembly\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOEM brushless pump with in bucket DW420 (no outside bracket, easy installation)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFuel level sending unit \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePlug-and-play boost activation harness or ReFlex (please email sales@spoolperformance.us if you want ReFlex)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e10 psi Hobbs switch\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eStage 4 (Return Style Fuel System\/AFS) — Up to 1,000 WHP\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eStage 4 builds on the dual-pump setup with upgraded fuel plumbing, an inline filter, and a regulated return system. It pairs the OEM brushless pump with a genuine \u003cstrong\u003eDW420 in the bucket (EASY INSTALL)\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePower support:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Up to 1,000 WHP, or 950 WHP on full E85\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContact us to purchase a 1200WHP system - sales@spoolperformance.us\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWhat’s included:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eGenuine OEM fuel pump bucket assembly\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eOEM brushless pump with in bucket DW420 (no outside bracket, easy installation)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFuel level sending unit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUpgraded -6 AN fuel feed and return lines\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1:1 genuine Radium Engineering compact fuel pressure regulator\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNew inline fuel filter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReFlex Activation Harness\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eE85-compatible components. Plug-and-play wiring. No core charge. Choose the stage that fits your power goals.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003ePower ratings are estimates and depend on fuel blend, operating pressure, electrical supply, and the rest of the vehicle’s fuel system.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Spool Performance","offers":[{"title":"Stage 3","offer_id":67597094748482,"sku":"S55-LPFP-1","price":899.0,"currency_code":"USD","in_stock":true},{"title":"Stage 4.5","offer_id":67597094781250,"sku":"S55-LPFP-2","price":1299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/7224\/2242\/files\/WhatsAppImage2026-09-28at6.21.37PM.jpg?v=1790634201","url":"https:\/\/spoolperformance.com\/fr\/products\/spool-f-series-s55-high-performance-fuel-pump-stage-3-stage-4-900whp","provider":"Spool Performance","version":"1.0","type":"link"}