Spool Auxiliary Split Fuel System - BMW S58
Ships from the brand or distributor, usually in 3–7 business days
Make sure this fits your car
Fits: BMW S58: M3 (G80/G81), M4 (G82/G83), M2 (G87), X3 M (F97), X4 M (F98)
- Free US shipping over $250
- 30-day returns on unused parts
- Fitment help before you buy
The Spool Performance S58 Auxiliary Fuel System is designed for S58 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 start, our focus was on correct fuel architecture and real-world usability. Every component and layout choice was made to deliver stable, predictable fueling at higher power levels while keeping installation clean and OEM-friendly. Why a Properly Split DI + PI Fuel System Matters As power levels increase on the S58 platform, fueling challenges typically come from supplying direct injection (DI) and port injection (PI) from the same fuel feed .
Fits: BMW S58: M3 (G80/G81), M4 (G82/G83), M2 (G87), X3 M (F97), X4 M (F98)
Brand: Spool Performance
BMW S58: M3 (G80/G81), M4 (G82/G83), M2 (G87), X3 M (F97), X4 M (F98)
| Model | Chassis | Years | Engine | Fits |
|---|---|---|---|---|
| M3 | G80/G81 | 2021+ | S58 (BMW M) | |
| M4 | G82/G83 | 2021+ | S58 (BMW M) | |
| M2 | G87 | 2023+ | S58 (BMW M) | |
| X3 M | F97 | 2020–2024 | S58 (BMW M) | |
| X4 M | F98 | 2020–2025 | S58 (BMW M) |
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 Split Fuel Surge Tank
Spool Stage 3 Low Pressure Fuel Pump DIY Kit - BMW S58
Spool Stage 3 Low Pressure Fuel Pump (Built Bucket) - BMW S58
