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Not sure which one? Ask us to confirm fitment first →For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. Outside the UK, shipping is shown at checkout and local customs and taxes remain your responsibility.
Some products are made to order, imported or custom built. If timing matters, contact us before ordering and we will confirm the expected delivery timeframe.
We confirm build spec, lead time and delivery arrangements with you before any money moves. Prefer to talk it through first?
| Manufacturer | Nostrum High Performance |
| Product Type | Fuel system bundle, HPFP kit and DI injectors |
| SKU | H186-2115 |
| Vehicle Application | BMW B58 Gen 1 |
| Pump flow increase over stock | 68% |
| Pump displacement | 1.603 cc/rev |
| Pump material | Cast stainless steel |
| Injector flow | 1169 cc/min at 100 bar, 35% over stock |
| Injector max operating pressure | 240 bar / 24 MPa / 3500 psi |
| Fuel compatibility | Ethanol compatible |
| Tune required | Yes, before the vehicle is started |
This is the complete first fuelling step for a tuned BMW B58 Gen 1, sold as one matched package: Nostrum's cast stainless Gauntlet high pressure fuel pump kit flowing 68% more than stock, paired with the Stage 1 direct injector set flowing 35% more than stock. Buying the two together matters because a B58 fuel system is only as good as its weaker half. Fit bigger injectors alone and the factory pump struggles to keep the rail full; fit the pump alone and the injectors cap the volume. Sized to each other, the pair gives a 340i, 440i, M240i, 540i, 740i, X3 or X4 the headroom to run a serious petrol map or an E30 to E50 ethanol blend without the fuel side dictating the ceiling.
A direct injection engine has two fuel-side limits, and upgrading one hands the problem to the other. The Gauntlet pump keeps rail pressure up where the cam-driven standard pump gives way, and the Stage 1 injectors provide the volume that pressure lets you use. Buying them matched also means one calibration session covers the finished fuel system instead of a second map when the next part goes on.
Gen 1 B58 engines only, and not a Gen 1 carrying the Dorch camshaft pump lobe. Match your car against the table below, and load the tune before the engine is started. If you would rather build up in steps, the Gauntlet HPFP kit and Stage 1 injectors are sold on their own.
| BMW model | Years | Market |
|---|---|---|
| 2-Series 240i / 240xi | 2015-2017 | ROW models - please call to confirm |
| M240i | 2017-2021 | |
| 3-Series 340i / 340xi | 2016-2019 | North America |
| 4-Series 440i / 440xi | 2017-2020 | North America |
| 5-Series 540i / 540xi | 2017-2020 | North America |
| 6-Series 640i | 2018-2019 | North America |
| 7-Series 740i | 2016-2019 | North America |
| X3 | 2018-2019 | |
| X4 | 2019 |
For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. For customers outside the UK, local customs and taxes remain your responsibility, and shipping is shown at checkout. If a shipping option is not available, email us and we will prepare a tailored quote.
Many of the products we sell are made to order, imported or custom built, so a lead time may apply. If you need a part urgently, contact us before ordering and we will confirm the expected delivery timeframe and process.
No. The bundle covers the pump kit and injectors; the calibration is arranged separately and has to be loaded before the car is started.
You can, and both parts are sold individually. Doing it in one go means one fitting session and one calibration rather than repeating both later.
Stage 1 is aimed at standard-turbo cars and blended ethanol. For a full E85 target or an upgraded turbo, the Stage 2 Gauntlet bundle uses the same pump with the larger Stage 2 injectors.
Use the checked vehicle route, then confirm model year, engine, drivetrain, hardware and existing modifications on the product page or with our team before you commit.
Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.
