Spool FX-350 High-Pressure Fuel Pumps – BMW S63 Gen 2

Spool FX-350 High-Pressure Fuel Pumps for BMW S63 Gen 2 are a dual-pump upgrade for high-output F9X BMW M applications.

• Supplier states approximately 50% more fuel delivery than OEM pumps
• Designed to operate at up to 390 bar / 39 MPa / 5600 psi
• Stainless-steel construction with DLC-coated piston and bore
• E85 compatible
• Complete dual-pump installation hardware and adapter harness included

Selectable options: wireless ethanol analyzer and Spool 10-micron filter.

Fitment: BMW F90 M5, F91/F92/F93 M8, F95 X5 M and F96 X6 M.

Important: Spool recommends an upgraded low-pressure fuel system. Tuning/calibration changes are required.

Dispatch: Special order — allow 2–3 weeks.

Confirmed catalogue fitment

• Engine families: S63B44T4
• BMW chassis: F90, F91, F92, F93, F95, F96
• Vehicle models: M5, M8, X5 M, X6 M

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.