3.0L BMW N55 High Pressure Fuel Pump Kit

🔧 Nostrum Big Bore High Pressure Fuel Pump (HPFP) – BMW N55

63% More Fuel Flow | E85 Compatible | OEM Fitment

💥 Unlock Your N55’s Full Potential

The stock N55’s single high-pressure fuel pump (HPFP) is a major bottleneck when chasing serious horsepower. Enter the Nostrum Big Bore HPFP, offering an incredible 63% more fuel flow than the factory pump—designed to keep up with your build’s demands, especially under boost and with ethanol-based fuels like E85.

No permanent modifications are needed. This HPFP kit installs just like an OEM part, meaning no irreversible changes and an easier, cleaner installation than vacuum-pump-based kits.

✅ Key Features:

• +63% more fuel flow vs. stock

• CFD-optimized, fully welded damper housing – leak-free, ultra-durable

• Dynamic multi-speed flow testing at real-world engine loads

• Ethanol compatible – safely run E85 or ethanol blends

• No tuning guesswork – install guides & tuner support available

• CARB-compliant version available (see alternate part number bundle)

• Colored flange options for a custom touch

• OEM-like installation – no cutting, no relocation, no hassle

• Backed by Nostrum’s Limited Lifetime Warranty

🚗 Compatible Vehicle Applications:

• 2011–2015 F30/F31 335i

• 2013–2016 F32/F33/F36 435i

• 2013–2016 F22/F23 M235i

• 2015–2016 F20/F21 M135i LCI

• 2012–2015 F20/F21 M135i

• 2016–2018 F87 M2 (Non-Competition)

• 2013–2017 F10/F11/F07 535i

• 2013–2017 F25/F26 X3/X4 35i

• 2014–2019 F15/F16 X5/X6 35i

• 2013–2018 F06/F12/F13 640i

• 2013–2015 F01 740i / Li

📦 What’s In The Box:

• Big Bore HPFP (fully welded stainless steel body)

• Stainless steel high-pressure fuel line

• Low-pressure line, flange, and install accessories

• New & old style harness adapters

• Comprehensive install guide

• Tuning guide for your dealer/tuner

• Color flange options available

🔧 Why Pair with Stage 2 Injectors?

While the HPFP feeds fuel volume in the mid-range (peak torque), injectors limit top-end horsepower. That’s why bundling this pump with Nostrum Stage 2 Injectors—which flow 55% more than OEM—unleashes full fuel system potential. Together, they allow for serious power on full E85 or high-boost pump gas setups.

💡 Bundling HPFP and Injectors turns your N55 into a 700–900 WHP monster, with OEM drivability and reliability.

🧠 Why N55 Owners Need This:

Unlike the S55 (which uses dual pumps), the N55 comes with only one HPFP from the factory. This drastically limits fueling capacity. The Nostrum pump solves this limitation without the complexity or cost of port injection or meth systems.

🧪 Tested to the Highest Standards

• Every pump is CFD optimized and welded—not bolted for a leak-free lifetime seal

• Each unit is dynamically tested at multiple RPMs and pressures

• Fully validated for ethanol compatibility and emissions readiness

• Tuning support and calibration guidance available

🧰 Frequently Asked Questions:

Q: Why don’t I see horsepower gains with just the pump?

A: Fuel system limitations shift with RPM. HPFPs help mid-range torque where the pump can deliver more volume. For top-end gains (high RPM), injector size becomes the limiting factor. That’s why pairing with Stage 2 Injectors is recommended for full benefit.

Q: Can you make a pump or injector for N54?

A: No. The N54 uses piezo-style outward-opening injectors, which are not modifiable without damage. Unfortunately, we can’t offer a high-performance replacement at this time.

📈 Proven Results:

Dyno sponsorships and real-world testing have shown:

• Massive torque gains in the mid-range

• Consistent fueling for 600–900 WHP+ builds

• Compatible with full E85 under proper tuning

👨💻 Recommended Tuners:

• Bend Calibration

• David Shoup

• Paul Johnson Tuning

• HCPerformance

• Cary Jordan

🎯 Summary:

If you're running out of fuel on your N55 build — this is the upgrade you’ve been waiting for. Clean install, no compromise, real results.

Don’t let your HPFP be the bottleneck. Upgrade now and fuel your next record.