Precision Raceworks N55 Big Bore High Pressure Fuel Pump

Maximum Fueling Power Without Port Injection | Flow-Tested | Leak-Free | E85-Compatible

Take your N55-powered BMW to the next level with the Precision Raceworks Big Bore High Pressure Fuel Pump (HPFP) — engineered to deliver maximum fuel flow and unmatched reliability. Developed in collaboration with NHP, this is the highest-flowing, most consistent HPFP upgrade ever produced for the N55 engine platform.

💪 Why Choose This Pump?

Unlike other “stage 2” or “big bore” pumps that fluctuate in flow or depend on questionable adapters, our Big Bore HPFP is laser-welded, gasket-free, and dynamically tested on professional-grade calibration equipment. If it doesn’t meet our standards, it never leaves the shop.

✅ Key Features:

• Unmatched Flow Performance:
  Flows more fuel than most competitors’ Stage 2 HPFPs — consistently and reliably.

• Individually Calibrated and Tested:
  Each unit ships with a certified flow calibration report for guaranteed performance and zero guesswork.

• 100% Leak-Free Construction:
  No gaskets. No adapter fittings. Laser-welded for permanent durability.

• Plug-and-Play Design:
  Direct fit for your specific N55 application with no modifications required.

• E85 & Flex Fuel Compatible:
  Engineered to handle all fuel types, including full E85 and ethanol blends.

• Tuner Supported:
  Fully compatible with MHD, Bootmod3, Ecutek, and more.

🚗 Vehicle Fitment – BMW N55 Applications

1 Series

• 135i: 2012–2013

• 135is: 2012–2013

• M135i: 2012–2015

• M135i LCI: 2015–2016

2 Series

• M235i: 2015–2016

• M2 (N55): 2016–2018

3 Series

• 335i: 2012–2015

• 335i xDrive: 2012–2015

• ActiveHybrid 3: 2013–2015

4 Series

• 435i / 435i xDrive: 2013–2016

5 Series

• 535i / 535i xDrive: 2012–2017

• ActiveHybrid 5: 2013–2016

6 Series

• 640i / 640i xDrive: 2013–2018

7 Series

• 740i / 740Li: 2013–2015

X Series

• X1 xDrive35i: 2013–2015

• X3 xDrive35i: 2012–2017

• X4 xDrive35i / M40i: 2014–2018

• X5 xDrive35i: 2013–2018

• X6 xDrive35i: 2013–2019

📦 What’s Included

• Precision Raceworks N55 Big Bore HPFP

• Flow Calibration Report

• Direct-fit installation hardware (if applicable)

🔧 Installation & Support

• Fully plug-and-play with OEM fuel system

• Supported by major tuners and software platforms

• Backed by Precision Raceworks’ reputation for proven fueling solutions

📈 The Bottom Line

If you're maxing out your stock HPFP or want to avoid the complexity of port injection, this upgrade gives you the headroom you need to safely push your build further—on pump gas, E85, or a custom blend.

✔ High Power Builds
✔ Track & Street Use
✔ Flex Fuel Ready
✔ Zero Leaks. Guaranteed Flow.