Spool Performance BMW B58 Stage 3 Low Pressure Fuel Pump DIY Kit - M140i, M240i, 340i, 440i Fuel Pump Upgrade
Looking for the best BMW B58 fuel pump upgrade for serious performance and reliability on your M140i, M240i, 340i or 440i? The Spool Performance B58 Stage 3 Low Pressure Fuel Pump DIY Kit is the proven low side fueling solution for tuned B58 engines. This DIY LPFP kit adds a secondary, boost activated in-tank pump and delivers similar flow to Spool’s plug and play kit at a lower price point. It is a high quality, high value upgrade built around a genuine Walbro 450 pump with billet aluminium hardware and quick-connect fittings for a clean install.
We have used this kit ourselves and installed it for customers at Nforcd. Feedback has been excellent and the kit has consistently solved low side fueling capacity issues on B58 builds. If your power goals have outgrown the stock low pressure fuel pump, this B58 LPFP upgrade is the dependable choice.
Key features - BMW B58 Stage 3 LPFP DIY Kit
- BMW B58 fuel pump upgrade for M140i, M240i, 340i and 440i models
- Stage 3 low pressure fuel pump kit designed to resolve low side fueling limitations on tuned B58 engines
- Genuine Walbro 450 high flow in-tank pump with two way quick-connect fitting
- Secondary boost activated LPFP using included boost switch and reference adapter
- Billet aluminium pump holder for secure, OEM-like fitment
- Complete DIY kit with activation harness, hoses, clamps and hardware
- Similar flow to the Spool plug and play kit at a more affordable price
- Ideal for B58 M140i M240i 340i 440i owners chasing reliable fueling under higher boost
What is included
- 1x Genuine Walbro 450 fuel pump modified with two way quick connect fitting
- 1x Billet aluminium pump holder
- 1x Filter side quick connect nylon hose
- 1x Pump side quick connect
- 1x Spare nylon hose
- 2x Crimp clamps
- 2x Screw-on clamps
- 1x Activation harness
- 1x Boost activated switch
- 1x Boost reference adapter
- 1x Hardware pack
Why choose this B58 fuel pump upgrade
- Solves low side fueling capacity issues that hold back tuned B58 engines
- High quality components from Spool Performance with a genuine Walbro 450 pump
- DIY friendly with clear installation guidance and quick-connect fittings
- Excellent value vs full plug and play alternatives while retaining strong flow
Compatibility - BMW B58 engine
This Spool Performance Stage 3 LPFP DIY Kit fits BMW B58 models including M140i, M240i, 340i and 440i across the following chassis. Perfect search terms and fitment references for BMW B58 fuel pump upgrade and B58 LPFP upgrade:
1 Series
- F20 LCI - 09/2015 to 06/2019 - M140i and M140ix
- F21 LCI - 09/2015 to 06/2019 - M140i and M140ix
2 Series
- F22 - 09/2015 to 06/2017 - M240i and M240ix
- F22 LCI - 09/2016 to 12/2019 - M240i and M240ix
- F23 - 09/2015 to 06/2017 - M240i and M240ix
- F23 LCI - 10/2016 to 12/2019 - M240i and M240ix
3 Series
- F30 LCI - 10/2014 to 10/2018 - 340i and 340ix
- F31 LCI - 10/2014 to 06/2019 - 340i and 340ix
- F34 GT LCI - 10/2014 to 2019 - 340i and 340ix
4 Series
- F32 - 2013 to 02/2017 - 440i and 440ix
- F32 LCI - 05/2016 to 12/2019 - 440i and 440ix
- F33 - 03/2015 to 02/2017 - 440i and 440ix
- F33 LCI - 05/2016 to 12/2019 - 440i and 440ix
- F36 Gran Coupe - 03/2015 to 02/2017 - 440i and 440ix
- F36 Gran Coupe LCI - 05/2016 to 12/2019 - 440i and 440ix
Common search terms for this item include BMW B58 fuel pump upgrade, B58 LPFP upgrade, M140i fuel pump, M240i fuel pump, 340i fuel pump, 440i fuel pump, Walbro 450 B58, Spool Performance B58 LPFP, Stage 3 low pressure fuel pump DIY.
Compatibility check before dispatch
To ensure the part fits your vehicle, we will run a compatibility check prior to dispatch. Provide your registration number for UK vehicles or the last 7 digits of your VIN at checkout.
Installation and fitting
This is a DIY kit and is straightforward to assemble using the provided instructions and quick-connect hardware. For professional fitting, we can help. Nforcd is based in Warwickshire and offers installation services for this Spool Performance B58 Stage 3 LPFP DIY kit. Request a fitting quote at Sales@nforcd.com.
Part number
SP-BMB58-FP-DY
Manufacturer
Spool Performance