Spool Stage 3 Low-Pressure Fuel Pump – BMW S58 G80/G82/G83/F97/F98

Complete boost-activated twin-pump Stage 3 low-pressure fuel-pump kit for listed BMW S58 M and X-M applications.

• Secondary pump engages during boost onset
• Nearly doubles low-side flow compared with the standard pump arrangement
• Designed to support more than 1200 wheel horsepower with suitable supporting hardware
• Suitable for high-demand E85 and other performance-fuel applications
• Complete installation hardware supplied

Kit contents / configuration:

• Dual-pump bucket assembly
• Secondary-pump activation harness
• Boost-activated switch
• Hardware pack

Important: Confirm exact chassis fitment before purchase, especially for models not explicitly listed by the manufacturer.

Confirmed catalogue fitment

• Engine families: S58
• BMW chassis: F97, F98, G80, G82, G83
• Vehicle models: M3, M4, X3 M, X4 M
• Production years: 2020-2024, 2020-2025, 2021-2026
• Drivetrain: AWD, RWD

Fuel-system selection and installation

Fuel-system parts must be selected around the complete combination of engine generation, fuel type, target output, existing pump and injector configuration, and the calibration strategy. A component appearing for an engine family does not mean it replaces every factory or upgraded fuel-system arrangement used on that engine.

Professional installation and calibration are recommended where the product changes fuel pressure, pump control, injector flow, ethanol-content input or port-injection operation. Confirm wiring, plumbing, electrical load, controller requirements and compatible supporting hardware before ordering.

Before ordering

Select your exact BMW through MLAB My Garage and review the product options, included parts and installation requirements. Where a vehicle has been modified from its original engine, transmission or fuel-system specification, contact MLAB with the VIN and current hardware list so the combination can be checked before supply.

MLAB support

MLAB by Boost and Tune can assist with product selection, workshop installation and dyno calibration for supported BMW applications in Melbourne. Product availability and lead time should be confirmed when ordering supplier-built or special-order components.