Precision Raceworks - B58 Big Bore HPFP || Gen 1

Precision Raceworks B58 Gen 1 Big Bore HPFP

63% More Flow – No Cutting, No Compromise – Full DI Power on E85

Unlock the full potential of your B58 Gen 1 engine with the Precision Raceworks Big Bore High-Pressure Fuel Pump (HPFP) — the ultimate upgrade for high-output builds relying on direct injection. Whether you’re pushing the limits on pump gas or E85, this is the fuel solution your engine has been waiting for.

With a 63% increase in fuel flow over the factory HPFP, this pump overcomes one of the biggest limitations in the Gen 1 B58 platform—single-pump fueling. Designed to support big power reliably and cleanly, this kit installs without permanent modification and includes every part needed for a seamless installation.

✅ Key Features:

• +63% HPFP Flow Increase Over Stock

• Direct Bolt-On Fit – No cutting or custom fabrication

• All Hardware & Lines Included – Complete install kit with fuel supply line and stainless hard line replacement

• E85 Compatible – Fully compatible with ethanol fuels and blends

• Smooth Bore PTFE Fuel Supply Line – Superior fuel delivery and durability

• Factory-Like Integration – No hacking up factory components

• Lifetime Limited Warranty – Quality you can rely on

• Comprehensive Install Guide & Tuning Support Included

💡 Why Upgrade?

Unlike the S58 engine with its dual HPFP setup, the B58 Gen 1 only comes with a single high-pressure fuel pump—making it a major bottleneck when chasing horsepower, especially on E85. Precision Raceworks’ Big Bore HPFP breaks through that barrier, delivering the extra fuel needed for consistent performance under high load, while preserving stock-like drivability and full ECU integration.

For even better results, pair this pump with Precision Raceworks Stage 2 Direct Injection Injectors for a full direct-injection solution—no port injection required.

📦 What's Included:

• Precision Raceworks Big Bore HPFP

• Replacement stainless steel hard line

• PTFE smooth bore fuel supply line

• All required mounting hardware

• Step-by-step installation instructions

• Lifetime product support

📋 Fitment Guide:

Compatible with B58 Gen 1 equipped BMW models including:

• 1-Series: F20/F21 M140i / M140xi (2014–2019) [ROW – Call to confirm]

• 2-Series: F22/F23 M240i / M240xi (2015–2017) [ROW – Call to confirm]

• 3-Series: F30/F31/F34 340i / 340xi (2016–2018) [North America]

• 4-Series: F32/F33/F36 440i / 440xi (2016–2020) [North America]

• 5-Series: G30/G31 540i / 540xi (2016–2019) [North America]

• 6-Series: G32 GT 640i (2016–2019) [North America]

❓ Frequently Asked Questions:

Q: Is this compatible with the B58 Gen 2 (e.g., A90 Supra)?
A: No. The Gen 2 B58 uses a 350-bar fuel system. This HPFP is engineered specifically for Gen 1 B58 with a 250-bar system.

Q: Will this work with aftermarket camshafts?
A: This system is designed for use with the OEM Gen 1 B58 camshaft. Compatibility with aftermarket camshafts is not guaranteed.

Q: Do I need port injection with this?
A: No. This pump, especially when paired with our Stage 2 injectors, can support serious power on DI alone.

⚠️ Note: Horsepower and torque gains depend on supporting mods, tuning, fuel quality, altitude, and more. Your actual results may vary.