Dorch Engineering BMW B58 HPFP Upgrade - Stage 1 & Stage 2 High Pressure Fuel Pump for G01 X3 M40i xDrive & G02 X4 M40i xDrive (Gen 1 up to 2019) - Plug-and-Play, E85 Ethanol Support

Dorch Engineering BMW B58 HPFP Upgrade - Stage 1 & Stage 2 High Pressure Fuel Pump for G01 X3 M40i xDrive & G02 X4 M40i xDrive (Gen 1 up to 2019) - Plug-and-Play, E85 Ethanol Support

£1,156.58
£1,156.58
£1,217.45
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Dorch Engineering BMW B58 High Pressure Fuel Pump Upgrade - Stage 1 and Stage 2 - G01 X3 M40i xDrive and G02 X4 M40i xDrive

Unlock reliable fueling headroom on your BMW B58 with the Dorch Engineering Stage 1 or Stage 2 HPFP upgrade. Perfect for G01 X3 M40i xDrive and G02 X4 M40i xDrive owners seeking a proven plug-and-play high pressure fuel pump for power, torque and ethanol support, this B58 HPFP delivers OEM-like drivability with the flow you need for tuned setups.

At Nforcd we have installed and used these Dorch B58 HPFP kits extensively, and customer feedback has been outstanding. Expect seamless integration, stable rail pressure and the confidence to run more boost and ethanol within your tuner’s strategy.

Why choose the Dorch B58 HPFP upgrade

  • Complete plug-and-play BMW B58 HPFP upgrade - no cutting, bending or crimping
  • Full DME integration and safety - behaves like OEM with superior flow
  • Stage 1 supports up to 600 whp depending on tune and ethanol blend
  • Stage 2 supports up to 700 whp and enables full E85 up to 550 whp depending on tune and fuel
  • Ideal fueling upgrade for tuned X3 M40i xDrive and X4 M40i xDrive
  • Designed specifically for Gen 1 B58 applications
  • Dorch Engineering lifetime warranty

What is included

  • HPFP with hardware
  • High pressure fuel line
  • Quick connect low pressure line
  • Low pressure line bracket
  • Plug and play adapter harness

Flow capacity reference

Approximate maximum fuel flow per camshaft revolution on the B58 platform:

  • HDP5 Evo - Stock B58 - 0.954 cc per rev
  • HDP6 - Stock B58TU - 1.178 cc per rev
  • Dorch Engineering Stage 1 - 1.299 cc per rev
  • Dorch Engineering Stage 2 - 1.558 cc per rev

Software and tuning

  • Software changes are required to run this pump
  • MHD or Bootmod3 users - tick the Dorch pump upgrade option when flashing
  • Alternatively, email your .BIN file to tuning@dorchengineering.com for the correct calibration changes - free of charge for Dorch customers

Vehicle compatibility

  • G01 - X3 M40i xDrive - up to model year 2019
  • G02 - X4 M40i xDrive - up to model year 2019

This HPFP is compatible with the Gen 1 B58 engine only. Not compatible with 2020 and newer B58 vehicles or B58TU applications.

Note: If you have a B58-equipped vehicle not listed here, contact us for fitment guidance.

Real world benefits for BMW X3 M40i and X4 M40i owners

  • Improved high load fuel delivery for tuned B58 engines
  • Stable rail pressure under boost for consistent power
  • Headroom for ethanol blends - Stage 2 supports full E85 up to 550 whp depending on tuning
  • OEM-like drivability with reliable cold start and idle

Installation and fitting

Looking for professional installation in the UK. Nforcd offers expert fitting in Warwickshire. Request a fitting quote at Sales@nforcd.com.

Compatibility check

We verify fitment before dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout so we can confirm compatibility for your BMW X3 M40i or X4 M40i.

Part numbers

  • DE-58-1001-X34 - Stage 1
  • DE-58-2001-X34 - Stage 2

Manufacturer and warranty

Manufactured by Dorch Engineering.

Backed by the Dorch Engineering Lifetime Warranty.

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