Spool Auxiliary Split Fuel System - Gen 1 B58
Ships from the brand or distributor, usually in 3–7 business days
Make sure this fits your car
Fits: Gen 1 B58: BMW M140i, M240i (F22), 340i (F30), 440i (F32), 540i (G30), 740i (G11), X3 M40i (G01), 2016–2019
- Free US shipping over $250
- 30-day returns on unused parts
- Fitment help before you buy
Spool Performance BMW B58 Gen 1 Auxiliary Fuel System The Spool Performance BMW B58 Gen 1 Auxiliary Fuel System is designed for B58 owners pushing beyond the limits of the factory fuel system who want a solution that’s properly engineered, easy to install, and built for long-term reliability. From the beginning, our focus was on correct fuel architecture and real-world usability. Every component and layout choice was made to deliver stable, predictable fueling as power levels increase, while keeping installation clean and OEM-friendly. Why a Properly Split DI + PI Fuel System Matters As power levels rise on the B58 platform, fueling challenges most commonly come from supplying direct injection (DI) and port injection (PI) from the same fuel feed .
Fits: Gen 1 B58: BMW M140i, M240i (F22), 340i (F30), 440i (F32), 540i (G30), 740i (G11), X3 M40i (G01), 2016–2019
Brand: Spool Performance
Gen 1 B58: BMW M140i, M240i (F22), 340i (F30), 440i (F32), 540i (G30), 740i (G11), X3 M40i (G01), 2016–2019
| Model | Chassis | Years | Engine | Fits |
|---|---|---|---|---|
| M140i | F20/F21 | 2016–2019 | Gen 1 B58 | |
| M240i | F22/F23 | 2016–2021 | Gen 1 B58 | |
| 340i | F30/F31/F34 | 2016–2019 | Gen 1 B58 | |
| 440i | F32/F33/F36 | 2017–2020 | Gen 1 B58 | |
| 540i | G30/G31 | 2017–2019 | Gen 1 B58 | |
| 740i | G11/G12 | 2016–2019 | Gen 1 B58 | |
| X3 M40i | G01 | 2018–2019 | Gen 1 B58 | |
| M340i | G20/G21 | 2019+ | Gen 2 B58 (TU) | |
| M440i | G22/G23/G26 | 2021+ | Gen 2 B58 (TU) | |
| M240i | G42 | 2022+ | Gen 2 B58 (TU) | |
| Z4 M40i | G29 | 2019+ | Gen 2 B58 (TU) | |
| GR Supra 3.0 | A90/A91 | 2020+ | Gen 2 B58 (TU) | |
| 540i | G30/G31 | 2020–2023 | Gen 2 B58 (TU) | |
| 740i | G11/G12 | 2020–2022 | Gen 2 B58 (TU) | |
| X3 M40i | G01 | 2020+ | Gen 2 B58 (TU) |
Not sure? Email sales@b58racing.com with your VIN.
- Ships from the brand or distributor, usually in 3–7 business days.
- Free US shipping on orders over $250.
- Unused parts can be returned within 30 days. Some items are marked no-refund in their description.
Full details are on our shipping and returns page.
Pairs well with
Spool Stage 3 Low Pressure Fuel Pump DIY Kit - G30 540i
Spool Split Fuel Surge Tank
Spool Wireless Ethanol Analyzer Kit - Gen 1 B58
