Spool Performance Stage 3 LPFP Upgrade for BMW B58 - Low Pressure Fuel Pump (M140i, M240i, 340i, 440i | F20 F21 F22 F23 F30 F31 F34 F32 F33 F36 | E85-Compatible Twin Pump)

Spool Performance Stage 3 In-Tank Fuel Supply Module for BMW B58 (M140i, M240i, 340i, 440i) – Twin Pump, E85 Ready

Building a serious B58 and need rock-solid fuelling on road or track? This Spool Performance Stage 3 in-tank module delivers the headroom your tune demands. The dual internal pump arrangement brings a massive increase in feed-side flow, with a secondary pump that comes online under boost. Expect close to double the throughput of the factory lift pump and support for over 1200 whp worth of low-side capacity, whether you run petrol, blends or full E85.

Engineered specifically for the BMW B58 platform, this complete bucket assembly integrates cleanly with the OE system for a tidy, reliable install. It is the ideal foundation for high boost, hybrid turbo and flex fuel builds where consistent supply pressure is non-negotiable.

Key advantages

• Ethanol compatible, from pump petrol to full E85 and flex fuel setups
• Dual in-tank design with staged activation on boost for stable low-side pressure
• Almost 2x the flow of the stock lift pump for significant headroom
• Supports over 1200 whp of low-side fuelling capacity across all fuel types
• Supplied as a brand new bucket assembly for OE-style fit and quiet operation
• Perfect partner to an uprated high-pressure pump on direct injection builds

Real-world proven

We have installed this kit on customer B58 cars and our own development vehicles. The result is consistent supply pressure, effortless cold starts on ethanol blends and dependable delivery at high load. Feedback has been excellent from street and track users alike.

What is included

• Spool Performance Stage 3 in-tank dual pump assembly
• Complete new fuel bucket build for direct integration

Vehicle compatibility

BMW B58 models

• 1 Series
  • F20 LCI 09/2015 to 06/2019: M140i, M140ix
  • F21 LCI 09/2015 to 06/2019: M140i, M140ix
• 2 Series
  • F22 09/2015 to 06/2017: M240i, M240ix
  • F22 LCI 09/2016 to 12/2019: M240i, M240ix
  • F23 09/2015 to 06/2017: M240i, M240ix
  • F23 LCI 10/2016 to 12/2019: M240i, M240ix
• 3 Series
  • F30 LCI 10/2014 to 10/2018: 340i, 340ix
  • F31 LCI 10/2014 to 06/2019: 340i, 340ix
  • F34 GT LCI 10/2014 to 2019: 340i, 340ix
• 4 Series
  • F32 2013 to 02/2017: 440i, 440ix
  • F32 LCI 05/2016 to 12/2019: 440i, 440ix
  • F33 03/2015 to 02/2017: 440i, 440ix
  • F33 LCI 05/2016 to 12/2019: 440i, 440ix
  • F36 Gran Coupé 03/2015 to 02/2017: 440i, 440ix
  • F36 Gran Coupé LCI 05/2016 to 12/2019: 440i, 440ix

Part number

SP-FX-150-B58

Fitting and support

Professional installation is recommended. For expert fitting and calibration support, choose MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Compatibility check

We verify fitment before dispatch. Please provide your UK registration or the last 7 characters of your VIN at checkout to ensure the correct part is supplied.

Search terms to help you find this item

B58 in-tank pump upgrade, BMW B58 lift pump kit, BMW ethanol fuel system, flex fuel B58 fueling, M140i in-tank pump, M240i fuel supply upgrade, 340i fuel system upgrade, 440i E85 pump, B58 twin pump bucket, B58 low-side fueling, BMW F20 F21 F22 F23 F30 F31 F34 F32 F33 F36 fueling upgrade, xDrive fueling kit, hybrid turbo fueling support, high boost fueling solution, BMW 1 Series 2 Series 3 Series 4 Series pump upgrade, LPFP kit for B58.