Precision Raceworks F-Series (F2x/F3x) B58 High-Performance Fuel Pumps

Fully Assembled | 100% E85 Compatible | Drop-In Installation

🔥 Built for Power, Designed for Simplicity

The Precision Raceworks High-Performance Fuel Pump Kits for the F-Series B58 engine are engineered for customers looking to run all blends of ethanol, including full E85, while supporting serious horsepower goals. These drop-in solutions come fully assembled — including the pump, fuel filter, fuel lines, and sending unit — with no core charge and no assembly required.

💪 Power Levels & Options

Stage 3 – Up to 900whp (5 LPM)

• Pump: OEM Brushless + Walbro 450 (F90000274)

• Rated For: 850whp on E85

• Includes:

  • Genuine OEM bucket with pre-installed pumps

  • Fuel sending unit (level sensor)

  • Plug-and-play boost reference harness

  • 13psi Hobbs switch (boost-activated trigger)

• No splicing or cutting required

Stage 4 – Up to 1,000whp (5.5 LPM)

• Pump: OEM Brushless + Walbro 450 (F90000274)

• Rated For: 950whp on E85

• Includes:

  • OEM pump bucket + mounted external pump

  • AN-6 fuel feed lines

  • Fuel pressure regulator and return line

  • 10-micron inline fuel filter

  • Plug-and-play boost reference harness

  • 13psi Hobbs switch

Stage 4.5 – 1,000+whp (6 LPM)

• Pump: OEM Brushless + Walbro 525 (F90000285)

• Rated For: 1000+whp on E85

• Includes:

  • OEM pump bucket + external Walbro 525

  • AN-6 fuel system with pressure regulator & return

  • Inline fuel filter

  • Plug-and-play boost reference harness

  • 13psi Hobbs switch

✅ Key Benefits

• True Plug & Play – No cutting, crimping, or fabrication needed

• 100% E85 Compatible

• Fully Submerged Pump Design – Reliable fueling under all driving conditions, including cornering & low tank levels

• Race-Proven Components – Walbro pumps + OEM brushless core

• Pre-assembled for Convenience – Saves hours of install time

📦 What’s Included (All Stages):

• Pre-assembled bucket with OEM brushless pump & external Walbro pump

• OEM fuel sending unit

• Boost reference Hobbs switch (13psi)

• Plug-and-play wiring harness

• Stage-dependent upgrades like AN-6 lines, regulator, and inline filter (Stages 4/4.5)

🚗 Vehicle Fitment

Compatible with BMW F-Series chassis equipped with the B58 engine, including:

• BMW 230i / 230i xDrive (2017–2020)

• BMW 320i / 320i xDrive (2017–2018)

• BMW 330i / 330i xDrive / GT xDrive (2017–2019)

• BMW 340i / 340i xDrive / GT xDrive (2016–2019)

• BMW 430i / 430i xDrive / Gran Coupe (2017–2020)

• BMW 440i / 440i xDrive / Gran Coupe (2017–2020)

• BMW M140i (2016–2019)

• BMW M240i / M240i xDrive (2017–2020)

• Bfw3 (2022 model — clarify if typo)

🧰 Installation

Designed for home installation with common tools. No fabrication required — just drop the pump in and go. The included plug-and-play harness and boost reference switch make integration seamless for both stock and tuned setups.

Fuel your build with confidence. Whether you’re running full E85 or chasing four-digit power goals, Precision Raceworks delivers the reliability and performance your B58 deserves.