{"product":{"id":11142673072470,"title":"Nostrum BMW B58 Gen 1 Gauntlet HPFP Kit","body_html":"\u003ch2\u003eSummary\u003c\/h2\u003e\u003cp\u003eThe Nostrum BMW B58 Gen 1 Gauntlet HPFP Kit replaces the factory high pressure fuel pump on a tuned 340i, 440i, M240i, 540i, 740i, X3 or X4 with Nostrum's cast stainless Gauntlet pump, flowing 68% more than stock at 1.603 cc\/rev and rated to 240 bar. On a B58 running more boost or an ethanol blend, the cam-driven pump decides whether rail pressure holds at the top of a pull; when it cannot keep up, pressure drops away where the engine needs fuel most and the tune has to be backed off. The kit arrives as a complete job, and Nostrum specifies a plug and play install with zero hardware modifications that is fully reversible if the car goes back to standard.\u003c\/p\u003e\u003ch2\u003eBest For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eB58 Gen 1 cars where rail pressure falls away at the top of a pull on an aggressive map\u003c\/li\u003e\n\u003cli\u003eEthanol blends, where the extra volume ethanol needs lands directly on the pump\u003c\/li\u003e\n\u003cli\u003eBuilds that want the fuel side sorted before an upgraded turbo goes on\u003c\/li\u003e\n\u003cli\u003eOwners who want the car returned to standard later without cut or drilled parts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere The Standard B58 Pump Runs Out\u003c\/h2\u003e\u003cp\u003eThe stock pump is sized around stock outputs and pump petrol. Raise either and it spends the whole pull at maximum output, which shows up as falling rail pressure rather than a warning light. Sixty-eight percent more flow means the pressure target set at 2,000 rpm is still met at the limiter, and the cast stainless body is built around the pressure it holds.\u003c\/p\u003e\u003ch2\u003eWhat Is In The Kit\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 and installation hardware\u003c\/li\u003e\n\u003cli\u003eComprehensive 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: high pressure fuel pump (HPFP) kit\u003c\/li\u003e\n\u003cli\u003eSKU: H086-2076\u003c\/li\u003e\n\u003cli\u003eVehicle Application: BMW B58 Gen 1, 2015-2021 depending on model\u003c\/li\u003e\n\u003cli\u003eFlow: 68% more than stock, 1.603 cc\/rev geometric displacement\u003c\/li\u003e\n\u003cli\u003eMax Operating Pressure: 240 bar \/ 24 MPa \/ 3500 psi\u003c\/li\u003e\n\u003cli\u003eMaterial: cast stainless steel\u003c\/li\u003e\n\u003cli\u003eBuyer Checks: tune required to start the engine; Gen 1 camshaft pump lobe only\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment And Setup Checks\u003c\/h2\u003e\u003cp\u003eMatch your car to the table below before ordering. The kit does not suit Gen 2 or Gen 3 B58 engines, or a Gen 1 fitted with the Dorch camshaft pump lobe, and a tune must be loaded before the engine is started. Pair it with matched \u003ca href=\"\/products\/nostrum-b58-gen-1-stage-1-injectors\"\u003eStage 1 injectors\u003c\/a\u003e, or take the \u003ca href=\"\/products\/nostrum-nostrum-b58-gen-1-stage-1-gauntlet-bundle-h186-2115\"\u003eStage 1 Gauntlet bundle\u003c\/a\u003e to get both sized to each other.\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\u003eH086-2076\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Application\u003c\/td\u003e\n\u003ctd\u003eBMW B58 Gen 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow increase over stock\u003c\/td\u003e\n\u003ctd\u003e68%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGeometric displacement\u003c\/td\u003e\n\u003ctd\u003e1.603 cc\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax operating pressure\u003c\/td\u003e\n\u003ctd\u003e240 bar \/ 24 MPa \/ 3500 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCast stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstall\u003c\/td\u003e\n\u003ctd\u003ePlug and play, zero hardware modifications, fully reversible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTune required\u003c\/td\u003e\n\u003ctd\u003eYes, must have a tune to start the vehicle\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\u003eBMW model\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eMarket\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-Series 240i \/ 240xi\u003c\/td\u003e\n\u003ctd\u003e2015-2017\u003c\/td\u003e\n\u003ctd\u003eROW models - please call to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM240i\u003c\/td\u003e\n\u003ctd\u003e2017-2021\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3-Series 340i \/ 340xi\u003c\/td\u003e\n\u003ctd\u003e2016-2019\u003c\/td\u003e\n\u003ctd\u003eNorth America\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4-Series 440i \/ 440xi\u003c\/td\u003e\n\u003ctd\u003e2017-2020\u003c\/td\u003e\n\u003ctd\u003eNorth America\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5-Series 540i \/ 540xi\u003c\/td\u003e\n\u003ctd\u003e2017-2020\u003c\/td\u003e\n\u003ctd\u003eNorth America\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6-Series 640i\u003c\/td\u003e\n\u003ctd\u003e2018-2019\u003c\/td\u003e\n\u003ctd\u003eNorth America\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7-Series 740i\u003c\/td\u003e\n\u003ctd\u003e2016-2019\u003c\/td\u003e\n\u003ctd\u003eNorth America\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eX3\u003c\/td\u003e\n\u003ctd\u003e2018-2019\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eX4\u003c\/td\u003e\n\u003ctd\u003e2019\u003c\/td\u003e\n\u003ctd\u003e\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 start the car before the tune is loaded?\u003c\/h3\u003e\u003cp\u003eNo. Nostrum is clear that a tune is needed to start the vehicle, so book the calibration to line up with the fitting work.\u003c\/p\u003e\u003ch3\u003eDoes anything have to be cut, drilled or modified?\u003c\/h3\u003e\u003cp\u003eNo. It is a plug and play install with zero hardware modifications, using the supplied flange, alignment tool, hardlines and harness adapter, and it can be reversed later.\u003c\/p\u003e\u003ch3\u003eWhich injectors go with this pump?\u003c\/h3\u003e\u003cp\u003eNostrum's Gen 1 B58 Stage 1 and Stage 2 sets. Stage 1 suits standard-turbo cars and blended ethanol; Stage 2 is the step for upgraded turbos and full E85.\u003c\/p\u003e\u003ch3\u003eWhat is the flow test data sheet for?\u003c\/h3\u003e\u003cp\u003eIt records the measured output of the pump you receive, giving your calibrator a real starting figure rather than a catalogue number when setting pressure targets.\u003c\/p\u003e","vendor":"Nostrum High Performance","product_type":"High Pressure Fuel Pumps","created_at":"2026-07-24T13:02:30+01:00","handle":"nostrum-bmw-b58-gen-1-gauntlet-hpfp-kit","updated_at":"2026-09-08T16:24:36+01:00","published_at":"2026-07-24T17:57:34+01:00","template_suffix":null,"published_scope":"global","tags":"BMW, BMW 2 Series, BMW 240i, BMW 3 Series, BMW 340i, BMW 4 Series, BMW 440i, BMW 5 Series, BMW 540i, BMW 6 Series, BMW 640i, BMW 7 Series, BMW 740i, BMW M240i, BMW X3, BMW X4, brand:nostrum-high-performance, cat:fuel, dept:performance-parts, 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-x3, fits:bmw-x4, make:bmw, type:high-pressure-fuel-pumps","variants":[{"id":54805979038038,"product_id":11142673072470,"title":"Default Title","price":"1741.55","sku":"H086-2076","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-07-24T13:02:30+01:00","updated_at":"2026-09-08T16:24:36+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":14231272292694,"product_id":11142673072470,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":83087868789078,"product_id":11142673072470,"position":1,"created_at":"2026-07-24T16:01:38+01:00","updated_at":"2026-07-24T16:01:41+01:00","alt":"Nostrum BMW B58 Gen 1 Gauntlet HPFP Kit","width":386,"height":257,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/NHP_B58_Gauntler__09106.1767718658.386.513_473ae503-8898-43e7-9b7a-4bfe71d8ad91.png?v=1784905301","variant_ids":[]}],"image":{"id":83087868789078,"product_id":11142673072470,"position":1,"created_at":"2026-07-24T16:01:38+01:00","updated_at":"2026-07-24T16:01:41+01:00","alt":"Nostrum BMW B58 Gen 1 Gauntlet HPFP Kit","width":386,"height":257,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/NHP_B58_Gauntler__09106.1767718658.386.513_473ae503-8898-43e7-9b7a-4bfe71d8ad91.png?v=1784905301","variant_ids":[]}}}