Precision Raceworks S58 Upgraded Hybrid Fuel Pump – BMW G8X M2/M3/M4

OVERVIEW

The S58 shares the B58's factory low-pressure fueling limitation once you push past stock power — the OEM in-tank pump isn't sized for big power on E85. The Precision Raceworks G8x S58 Upgraded Hybrid Fuel Pump upgrades the factory pump with an additional external Walbro pump, following the same protected-system philosophy as PRW's B58 pumps: proper inline filtration to protect the high-pressure pump and injectors.

SPECS

• E85 compatible — rated for all fuel blends including 100% E85
• Stage 2 (450 LPH @ 5 bar): ~50% increase over stock; retains the OEM brushless pump and adds an external Walbro 450 (F90000274); up to 850whp pump gas / 800whp E85
• Stage 2.5 (486 LPH @ 5 bar): retains the OEM brushless pump and adds an external Walbro 525 (F90000285); up to 950whp pump gas / 900whp E85
• Includes proper inline filtration to protect the HPFP and direct injectors
• Single fuel line design — ideal for running one line to the front of the car to feed both the HPFP and port injection from one pump assembly

PARTS INCLUDED

• Walbro external fuel pump (450 or 525 depending on stage)
• Billet fuel pump mounting bracket
• Pump activation harness
• Universal fuel line kit with fittings (110" of line, quick-connect and AN6 fittings)

TECH RESOURCES

• Install guides: Stage 2 · Stage 2.5 · Pump Activation Harness (201-0049) v3
• Requires a supporting ECU tune — MHD Super License for S58
• Feeds the S58 direct + port fueling — pair with the S58 Port Injection Kit; add the Solid State Relay Upgrade for the pump electrical load
• External-pump hybrid setups use a PRW billet top hat — G-Series & Supra Billet Top Hat
• Highest fueling ceiling — step up to the PRW Stand Alone AFS™: M3/M4/M340i/M440i · M2/M240i
• Included fuel line is a universal set and may require some customization for your setup
• Not for sale or use in California on any pollution-controlled vehicle per CARB

PART NUMBER

• 601-0289-G8x (Stage 2)
• 622-0284-G8x (Stage 2.5)

VEHICLE APPLICATIONS

Note: confirmed fitment for this SKU does not include the F97 X3M or F98 X4M — those chassis are listed by some other retailers but excluded here since fitment wasn't independently confirmed.