{"product_id":"spool-stage3-lpfp-s63","title":"Spool Performance Stage 3 Low-Pressure Fuel Pump — S63 \/ S63TU","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance Stage 3 low-pressure fuel pump for the S63 and S63TU — the in-tank side that keeps a Stage 3 V8 build fed.\u003c\/strong\u003e The factory in-tank (low-pressure) pumps run out of duty on E85 and high boost, and rail pressure drops up top. Spool's Stage 3 adds a boost-activated secondary pump, roughly doubling low-pressure flow.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA twin-pump in-tank upgrade that switches on the second pump under boost (boost\/Hobbs-switch activated) — cruise stays factory-quiet, the system only ramps when you're on it. Spool rates it to support 1,200+ whp. Pick your chassis above: the earlier S63TU M5\/M6 (F10\/F12\/F13) and the Gen2 S63 M5\/M8 (F90\/F9x) use different assemblies and price accordingly.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eLow-pressure (in-tank) side; pairs with an upgraded high-pressure (DI) pump so the HPFP is never starved. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS63 \/ S63TU — F10 M5, F06\/F12\/F13 M6 (S63TU); F90 M5, F91\/F92\/F93 M8 (Gen2 S63). Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-s63\"\u003eFueling Kit — S63\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"F10 \/ F12 \/ F13","offer_id":43280695754813,"sku":"SP-LS3-S63","price":815.0,"currency_code":"USD","in_stock":true},{"title":"F90 \/ F91 \/ F92 \/ F93","offer_id":43280695787581,"sku":"SP-LS3-S63-G2","price":1715.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Spool_stage3_lpfp_jpg.png?v=1781742666","url":"https:\/\/essewerks.com\/products\/spool-stage3-lpfp-s63","provider":"Esse Werks","version":"1.0","type":"link"}