Spool Stage 4 FX400X High-Pressure Fuel Pump – BMW B58 Gen 2
Spool Stage 4 FX400X High-Pressure Fuel Pump – BMW B58 Gen 2
Spool Stage 4 FX400X High-Pressure Fuel Pump for BMW B58 Gen 2 is Spool's flagship high-pressure pump for high-output direct-injection builds.
- Supplier-rated for up to 350 bar / 35 MPa / 5000 psi operation
- Approximately 20% more delivery across the range than Spool's FX350
- Plug-and-play architecture with mounting hardware, pump alignment tool, low-pressure line and adapter harness
- Designed for use with upgraded B58 Gen 2 direct-injection systems
Selectable options: wireless ethanol analyzer and Spool 10-micron filter.
Important: calibration changes are required and adequate low-pressure fuel supply is critical.
Dispatch: Backorder — lead time confirmed when stock is allocated.
Product System
- Fuel System
Vehicle Fitment
- BMW 2 Series M240I G42 B58
- BMW 340I M340I G20 G21 B58
- BMW 4 Series G22 B58
- BMW 4 Series Gran Coupe G26 B58
- BMW 5 Series G30 B58
- BMW X3 G01 B58
- BMW X4 G02 B58
- BMW Z4 G29 B58
Confirm chassis, engine, drivetrain and production-year compatibility before ordering.
Supplier Part Numbers
SP-FX400X-B58G2-NOEA-NF, SP-FX400X-B58G2-NOEA-F, SP-FX400X-B58G2-EXEA-NF, SP-FX400X-B58G2-EXEA-F, SP-FX400X-B58G2-EA-NF, SP-FX400X-B58G2-EA-F
Built by Boost & Tune Support
BBT can assist with fitment review, installation, supporting modifications, configuration and calibration requirements where applicable.