{"product_id":"spool-fx200-hpfp-n55","title":"Spool Performance FX-200 High-Pressure Fuel Pump — N55 (F-Chassis)","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance FX-200 high-pressure fuel pump for the F-chassis N55 — the direct-injection pump that clears the Stage 2\/3 fueling ceiling.\u003c\/strong\u003e The factory DI pump runs out of volume as boost and ethanol climb, and the calibration starts trimming power to hold rail pressure. The FX-200 roughly doubles stock flow, so fuel stops being the limit.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA direct, plug-and-play replacement for the OEM high-pressure (direct-injection) pump — larger bore, about twice stock flow, E85-compatible. A matching calibration is loaded before first start.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eThe high-pressure (DI) side; on a Stage 3 build it pairs with an upgraded low-pressure in-tank pump so it stays fed. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eOptions\u003c\/h3\u003e\n\u003cp\u003eSpool offers a wireless ethanol-content analyzer and a 10-micron inline filter as add-ons — tell us if you want either specced in.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N55 (F-chassis) — F20\/F21 M135i, F22\/F23 M235i, F30 335i, F32\/F33\/F36 435i, F87 M2, F25 X3 35i, F26 X4 35i, F10 535i. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-n55\"\u003eFueling Kit — N55\u003c\/a\u003e bundles the matched pump + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"None \/ None","offer_id":43280681336893,"sku":"SP-FX-200-N55-NENF-DFVA","price":2205.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ None","offer_id":43280681369661,"sku":"SP-FX-200-N55-NENF-DFVA-UE","price":2205.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ None","offer_id":43280681402429,"sku":"SP-FX-200-N55-NENF-DFVA-EA","price":2554.0,"currency_code":"USD","in_stock":true},{"title":"None \/ With 10-Micron Filter","offer_id":43280681435197,"sku":"SP-FX-200-N55-NENF-DFVA-F","price":2354.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ With 10-Micron Filter","offer_id":43280681467965,"sku":"SP-FX-200-N55-NENF-DFVA-UE-F","price":2354.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ With 10-Micron Filter","offer_id":43280681500733,"sku":"SP-FX-200-N55-NENF-DFVA-EA-F","price":2703.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/spool-fx200-hpfp-ew02.webp?v=1781742887","url":"https:\/\/essewerks.com\/products\/spool-fx200-hpfp-n55","provider":"Esse Werks","version":"1.0","type":"link"}