S58 Fuel Pumps

Compare BMW S58 fuel pump upgrades and auxiliary fuel systems from Precision Raceworks. Start with your chassis and fuel-system layout: a primary pump upgrade and a separate supply for port injection perform different jobs.

Hybrid primary fuel pump or dedicated AFS?

The G8x S58 hybrid primary fuel pump upgrades the factory low-pressure supply. Its listed configurations use the factory brushless pump with an additional Walbro pump. This layout can feed the high-pressure fuel pump and port injection through a shared supply; check the fuel-line and filter requirements for the selected stage.

A stand-alone auxiliary fuel system, or AFS, supplies the port injection separately. It does not replace the engine's high-pressure direct-injection pump. Precision Raceworks offers chassis-specific systems with dedicated pumps, lines, filtration and pressure regulation. Included components and pump configurations vary by option.

Shop by BMW chassis

• G8x M3/M4 stand-alone AFS: review the G8x/G2x application's options.
• G87 M2 stand-alone AFS: select the configuration for your vehicle.
• F97 X3M stand-alone AFS: check the X3/X3M product's listed fitment.

These products also list selected B58 applications where specified. Match the exact model, engine and chassis before ordering; S58 fuel systems are not interchangeable across every BMW chassis.

For the rest of your setup, explore S58 port injection kits, all S58 performance parts, and our BMW fueling and ignition collection. Use the stage-specific fuel-blend ratings and your tuner's requirements to choose capacity.