{"product":{"id":11142672613718,"title":"Nostrum BMW N55 1170-250 Gauntlet HPFP Kit","body_html":"\u003ch2\u003eSummary\u003c\/h2\u003e\u003cp\u003eThe Nostrum BMW N55 1170-250 Gauntlet HPFP Kit is the part you fit when the factory high pressure fuel pump has become the thing holding your map back. Nostrum rates it at 70% more flow than the stock N55 pump, and 4% more than their earlier Big Bore, using a cast stainless-steel Gauntlet pump body developed for the BMW 3.0L N55. The install is plug and play with zero hardware modification and fully reversible when the car moves on, though a calibration is still needed to use the extra volume. If your N55 is on an aggressive map, drinking ethanol blends or about to see a bigger turbo, this is what takes fuel supply off the list of limits.\u003c\/p\u003e\u003ch2\u003eBest For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTuned N55 cars where rail pressure falls away at the top of the rev range under load.\u003c\/li\u003e\n\u003cli\u003eCars moving onto E85 or ethanol blends, which need far more volume than petrol.\u003c\/li\u003e\n\u003cli\u003eBuilds adding a larger turbo, where fuel needs sorting before boost goes up.\u003c\/li\u003e\n\u003cli\u003eProjects that may need to go back to standard fuel hardware later.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere The Stock N55 Pump Runs Out\u003c\/h2\u003e\u003cp\u003eThe N55 runs a single cam-driven pump feeding the direct injection rail, sized for the factory power level. Push boost or switch to ethanol and it reaches its volume limit before the injectors do, so commanded rail pressure sags exactly when the engine is asking for the most fuel. Backing the tune off is one answer; fitting a bigger pump is the one that lets the rest of the hardware keep working. The Gauntlet body is Nostrum's newer cast stainless design and sits above the Big Bore in their N55 range.\u003c\/p\u003e\u003ch2\u003eWhat Comes In The Box\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHigh-capacity high pressure fuel pump\u003c\/li\u003e\n\u003cli\u003eLow-pressure inlet tube with teflon internals\u003c\/li\u003e\n\u003cli\u003eStainless-steel high-pressure outlet tube\u003c\/li\u003e\n\u003cli\u003ePump adaptation flange and flange alignment tool\u003c\/li\u003e\n\u003cli\u003eElectrical harness adapter\u003c\/li\u003e\n\u003cli\u003eInstallation hardware, including the ultra-low-profile knock sensor bolt\u003c\/li\u003e\n\u003cli\u003eFull-colour installation guide and pump flow test data sheet\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eKey Specs\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Nostrum High Performance\u003c\/li\u003e\n\u003cli\u003eProduct Type: single high pressure fuel pump kit\u003c\/li\u003e\n\u003cli\u003eSKU: H086-2077\u003c\/li\u003e\n\u003cli\u003eVehicle Application: BMW 3.0L N55, F-chassis\u003c\/li\u003e\n\u003cli\u003eFlow capacity: 70% over the stock pump\u003c\/li\u003e\n\u003cli\u003eFitment type: vehicle-specific\u003c\/li\u003e\n\u003cli\u003eFuel: petrol, E85 and intermediate blends\u003c\/li\u003e\n\u003cli\u003eCalibration: required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment And Setup Checks\u003c\/h2\u003e\u003cp\u003eMatch your chassis code and year to the table below, and remember the pump is only half the job: a calibration from EcuTek, MHD or Bootmod3 has to command the extra volume. Injectors are a separate purchase, so many N55 cars pair this pump with the \u003ca href=\"\/products\/nostrum-3-0l-bmw-s55-n55-stage-2-di-injectors\"\u003eStage 2 DI injectors\u003c\/a\u003e, or buy both as the \u003ca href=\"\/products\/nostrum-nostrum-bmw-n55-stage-2-gauntlet-bundle-h186-2113\"\u003eN55 Stage 2 Gauntlet bundle\u003c\/a\u003e. Running varying ethanol content also calls for a flex fuel sensor.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eNostrum High Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eHigh pressure fuel pump kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eH086-2077\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Application\u003c\/td\u003e\n\u003ctd\u003eBMW 3.0L N55\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow capacity\u003c\/td\u003e\n\u003ctd\u003e70% over stock; 4% over the Nostrum Big Bore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGeometric displacement\u003c\/td\u003e\n\u003ctd\u003e1.52 cc\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommanded rail pressure\u003c\/td\u003e\n\u003ctd\u003e250 bar \/ 25 MPa \/ 3625 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePump body\u003c\/td\u003e\n\u003ctd\u003eCast stainless steel, Gauntlet architecture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel compatibility\u003c\/td\u003e\n\u003ctd\u003ePetrol, E85 and intermediate blends\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported potential\u003c\/td\u003e\n\u003ctd\u003e684 whp petrol, 575 whp E85 with a full supporting build and calibration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning suites\u003c\/td\u003e\n\u003ctd\u003eEcuTek, MHD, Bootmod3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLimited lifetime against manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2011-2015\u003c\/td\u003e\n\u003ctd\u003eF30\/F31\u003c\/td\u003e\n\u003ctd\u003e335i\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2013-2016\u003c\/td\u003e\n\u003ctd\u003eF32\/F33\/F36\u003c\/td\u003e\n\u003ctd\u003e435i\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2013-2016\u003c\/td\u003e\n\u003ctd\u003eF22\/F23\u003c\/td\u003e\n\u003ctd\u003eM235i\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2016\u003c\/td\u003e\n\u003ctd\u003eF20\/F21\u003c\/td\u003e\n\u003ctd\u003eM135i LCI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2012-2015\u003c\/td\u003e\n\u003ctd\u003eF20\/F21\u003c\/td\u003e\n\u003ctd\u003eM135i\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016-2018\u003c\/td\u003e\n\u003ctd\u003eF87\u003c\/td\u003e\n\u003ctd\u003eM2 (Non-Competition)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2013-2017\u003c\/td\u003e\n\u003ctd\u003eF10\/F11\/F07\u003c\/td\u003e\n\u003ctd\u003e535i\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2013-2017\u003c\/td\u003e\n\u003ctd\u003eF25\/F26\u003c\/td\u003e\n\u003ctd\u003eX3\/X4 35i\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2019\u003c\/td\u003e\n\u003ctd\u003eF15\/F16\u003c\/td\u003e\n\u003ctd\u003eX5\/X6 35i\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2013-2018\u003c\/td\u003e\n\u003ctd\u003eF06\/F12\/F13\u003c\/td\u003e\n\u003ctd\u003e640i\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2013-2015\u003c\/td\u003e\n\u003ctd\u003eF01\u003c\/td\u003e\n\u003ctd\u003e740i\/Li\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan I fit this and leave the tune alone?\u003c\/h3\u003e\u003cp\u003eNo. A calibration is required. The pump can move more fuel, but the ECU has to be told to ask for it, so budget for tuning at the same time.\u003c\/p\u003e\u003ch3\u003eWill it run full E85?\u003c\/h3\u003e\u003cp\u003eYes. The pump is compatible with petrol, E85 and blends in between, which is the main reason most N55 owners buy it.\u003c\/p\u003e\u003ch3\u003eDoes anything get permanently modified?\u003c\/h3\u003e\u003cp\u003eNo. The install is plug and play with zero hardware modification and fully reversible, so the car can go back to factory fuel hardware later.\u003c\/p\u003e\u003ch3\u003eDo I need bigger injectors too?\u003c\/h3\u003e\u003cp\u003eNot immediately. The pump is usually the first limit reached; injectors become the next step once you chase more airflow or a heavier blend.\u003c\/p\u003e","vendor":"Nostrum High Performance","product_type":"High Pressure Fuel Pumps","created_at":"2026-07-24T13:02:18+01:00","handle":"nostrum-bmw-n55-1170-250-gauntlet-hpfp-kit","updated_at":"2026-09-08T20:10:16+01:00","published_at":"2026-07-24T17:57:26+01:00","template_suffix":null,"published_scope":"global","tags":"BMW, BMW 1 Series, BMW 2 Series, BMW 3 Series, BMW 335i, BMW 4 Series, BMW 435i, BMW 5 Series, BMW 535i, BMW 6 Series, BMW 640i, BMW 7 Series, BMW 740i, BMW M135i, BMW M2, BMW M235i, BMW X3, BMW X4, BMW X5, BMW X6, brand:nostrum-high-performance, cat:fuel, dept:performance-parts, fits:bmw-1-series, fits:bmw-2-series, fits:bmw-3-series, fits:bmw-4-series, fits:bmw-5-series, fits:bmw-6-series, fits:bmw-7-series, fits:bmw-m2, fits:bmw-x3, fits:bmw-x4, fits:bmw-x5, fits:bmw-x6, make:bmw, type:high-pressure-fuel-pumps","variants":[{"id":54805978579286,"product_id":11142672613718,"title":"Default Title","price":"1648.83","sku":"H086-2077","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-07-24T13:02:19+01:00","updated_at":"2026-09-08T20:10:16+01:00","taxable":true,"barcode":null,"grams":0,"image_id":null,"weight":0.0,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]}],"options":[{"id":14231271702870,"product_id":11142672613718,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":83087868297558,"product_id":11142672613718,"position":1,"created_at":"2026-07-24T16:01:34+01:00","updated_at":"2026-07-24T16:01:36+01:00","alt":"Nostrum BMW N55 1170-250 Gauntlet HPFP Kit","width":500,"height":333,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/H136-1998__52892.1767650644_88a92f2d-b2d7-4b0f-bff6-7477aa4c8bc6.png?v=1784905296","variant_ids":[]}],"image":{"id":83087868297558,"product_id":11142672613718,"position":1,"created_at":"2026-07-24T16:01:34+01:00","updated_at":"2026-07-24T16:01:36+01:00","alt":"Nostrum BMW N55 1170-250 Gauntlet HPFP Kit","width":500,"height":333,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/H136-1998__52892.1767650644_88a92f2d-b2d7-4b0f-bff6-7477aa4c8bc6.png?v=1784905296","variant_ids":[]}}}