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Performance M

Dorch Engineering B58 Stage 2 HPFP Upgrade – High-Pressure Fuel Pump for BMW M140i M240i 340i 440i 540i 640i 740i X3/X4 M40i (Gen 1 ≤2019) – Uprated High-Flow DI Pump, E85 Ready, Plug & Play

Dorch Engineering B58 Stage 2 HPFP Upgrade – High-Pressure Fuel Pump for BMW M140i M240i 340i 440i 540i 640i 740i X3/X4 M40i (Gen 1 ≤2019) – Uprated High-Flow DI Pump, E85 Ready, Plug & Play

£1,868.00
£1,868.00
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Stage 2 Uprated High-Pressure Fuel Pump for BMW B58 Engines

Unlock dependable fueling headroom for serious power and ethanol blends with this Stage 2 high-pressure fuel pump from Dorch. Designed for the BMW B58 direct-injection platform, it delivers a major increase in high-side fuel volume for big-power street builds, hybrid or single turbo conversions and track-focused setups. It is a direct replacement that integrates with the factory ECU, so you keep all OEM safety strategies and drivability.

Proven on our own cars and customer builds at MJ Modifications, this upgrade has been a standout for reliability and consistency. Expect support up to around 700 wheel horsepower on petrol and full E85 capability up to roughly 550 wheel horsepower, subject to calibration, turbo choice and fuel quality.

Why choose this B58 fueling upgrade

  • Significant increase in high-side fuel delivery for demanding tunes and big turbo setups
  • Ethanol ready for E50 to E85 mixtures within the stated power ranges
  • OEM-style control through the factory ECU for smooth cold starts and idle quality
  • No permanent modifications required to lines or fittings
  • Complete kit with lines, hardware and plug-in harness for a tidy install
  • Used in-house by MJ Modifications with excellent customer feedback

B58 pump flow comparisons

Reference fuel volume per camshaft revolution on the B58 cam lobe:

  • HDP5 Evo, factory B58: 0.954 cc per rev
  • HDP6, factory B58TU: 1.178 cc per rev
  • Dorch Stage 1: 1.299 cc per rev
  • Dorch Stage 2: 1.558 cc per rev

Actual capacity varies with cam design and tuning strategy.

ECU calibration notes

Software changes are required. When using Bootmod3, MHD or MG Flasher, tick the option for the Dorch pump upgrade when flashing. If you are using alternative software, email your .BIN file to tuning@dorchengineering.com to have the required changes applied free of charge for Dorch customers.

What is included

  • High-pressure fuel pump with mounting hardware
  • High-pressure line
  • Quick-connect low-pressure line
  • Low-pressure line bracket
  • Plug-in adapter harness

Vehicle applications

  • F20 F21 - 140i, 140xi
  • F22 F23 - 240i, 240xi
  • F30 F31 F34 - 340i, 340xi
  • F32 F33 F36 - 440i, 440xi
  • G30 G31 - 540i, 540xi*
  • G32 - 640i, 640xi*
  • G11 G12 - 740i, 740xi*
  • G01 - X3 M40i*
  • G02 - X4 M40i*

* Only up to 2019 model year. Not compatible with 2020 and newer B58 vehicles.

Professional fitting

Want it installed properly first time? Book fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.

Search-friendly highlights

BMW M140i fuel pump upgrade. M240i fueling solution. 340i and 440i high-pressure fuel pump. 540i 640i 740i DI pump upgrade. X3 M40i X4 M40i HPFP. B58 Gen 1 fueling kit. High-flow HPFP for hybrid turbo and single turbo builds. E85-ready B58 fuel system upgrade. Direct-injection performance pump. Plug-in replacement with OEM-level control. Ideal for Stage 2, Stage 2+ and custom calibrations.

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