{"product_id":"spool-fx350-hpfp-s58","title":"Spool Performance FX-350 High-Pressure Fuel Pumps (Pair) — S58","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance FX-350 high-pressure fuel pumps for the S58 — supplied as a matched pair for the engine's dual-pump direct-injection system.\u003c\/strong\u003e Each is a 390-bar (5,600 psi) pump with a stainless, DLC-coated piston and bore; together they deliver about 50% more fuel than the OEM pumps.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA two-pump kit (one per OEM location) — Spool sizes the S58\/S63 V8 pumps at 390 bar rather than the inline-six's 350 bar. Plug-and-play, lifetime warranty, pairs with Spool's Gen2 DI injectors. The kit includes both pumps, brackets, an alignment tool, a triple-layer low-pressure line, and a plug-and-play adapter harness + hardline.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eHigh-pressure (DI) side; run it with an upgraded low-pressure in-tank pump and a matching calibration. 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\u003eS58 — G80\/G81 M3, G82\/G83 M4, G87 M2, F97 X3 M, F98 X4 M. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-s58\"\u003eFueling Kit — S58\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"None \/ None","offer_id":43280685563965,"sku":"SP-S58-FX350-2","price":5435.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ None","offer_id":43280685596733,"sku":"SP-S58-FX350-2-UE","price":5435.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ None","offer_id":43280685629501,"sku":"SP-S58-FX350-2-EA","price":5784.0,"currency_code":"USD","in_stock":true},{"title":"None \/ With 10-Micron Filter","offer_id":43280685662269,"sku":"SP-S58-FX350-2-F","price":5584.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ With 10-Micron Filter","offer_id":43280685695037,"sku":"SP-S58-FX350-2-UE-F","price":5584.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ With 10-Micron Filter","offer_id":43280685727805,"sku":"SP-S58-FX350-2-EA-F","price":5933.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/spool-fx350-hpfp-ew02.webp?v=1781742886","url":"https:\/\/essewerks.com\/products\/spool-fx350-hpfp-s58","provider":"Esse Werks","version":"1.0","type":"link"}