Spool Stage 3 DIY Low-Pressure Fuel Pump – BMW F90 M5 S63

Spool Stage 3 DIY LPFP Kit provides the components required to convert the F90 M5 low-side system to a boost-activated twin-pump arrangement.

• Secondary fuel-pump assembly
• Activation harness
• Boost-activated switch
• Boost reference adapter and hardware

Designed to support high-output ethanol-fuel combinations where the factory low-pressure system becomes a restriction.

Fitment: BMW F90 M5 S63. Confirm VIN before ordering.

Dispatch: Special order — allow 2–3 weeks.

Supplier

Spool Performance

Product System

• Fuel System

Vehicle Fitment

• BMW M5 F90 S63

Confirm chassis, engine, drivetrain and production-year compatibility before ordering.

Supplier Part Number

SP-F90M5-LPFPDIY

Built by Boost & Tune Support

BBT can assist with fitment review, installation, supporting modifications, configuration and calibration requirements where applicable.