BMW Fuel System Parts for BMW 6 Series F12 (2012+)

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Looking for a BMW fuel pump, BMW gas cap or other BMW fuel system related items? You've found the right place. Your BMW fuel delivery system is a critical system, and any failure can rended your BMW dead in the water. Whether your fuel pump has stopped pumping, a fuel injector is clogged or not spraying, or your gas cap is either lost or not properly sealing, we likely have what you are looking for. We stock thousands of BMW fuel system parts so if you don't see what you are looking for, just give us a call.

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Spool Performance Helix HPFP Overdrive Unit - N55
For models with a production date up to 03/2012
Spool Performance - Corporate Logo
T#:9642131
Part#: SP-54HX-1-N55
Special Order: No Guaranteed ETA
$ 849.00 USD
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$ 849.00 USD
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Spool Performance is a top name in the BMW Forced Induction industry. Their team of young and intelligent engineers pair their passion for the industry with a rich education background, which results in a high-quality enthusiast-minded products. Spool Performance's state-of-the-art upgrades for your BMW fueling systems are a surefire way to make more power, reliably. The Helix from Spool is simply a planetary gearbox for your High-pressure fuel pump. The particular configuration of the gears and their spatial fixturing allows an axial increase in shaft speed from the input to the output of the unit. The early N55 high-pressure pump is a very capable and over-engineered piece of hardware. As we start tuning and pushing more power, we start seeing drops in the high pressure. What is happening here is that the high-pressure pump is not able pump as much fuel as the injectors are injecting into the cylinders and hence causing the rail pressures to drop. The pump at this point is running out of displacement volume. With a rotary pump like the continental HPFP, an easier way to increase displacement is to spin the pump faster which results in an increased number of delivery strokes per cycle. The Helix helps you do exactly this and thus helps overcome a big limitation in early N55 fuel systems without the complexity of a secondary port injection system.
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Fuel-It! - Corporate Logo
T#:403363
Part#: FIEPIK4
Back Ordered
Starting at $ 1,688.99 USD
Free Shipping
Starting at $ 1,688.99 USD
Free Shipping

Are you running more E85 or making more power on pump gas than your HPFP (High-Pressure Fuel Pump) can support?

Fuel-it has developed a port injection kit for your S55 that will provide you with the additional fueling capacity that you need to be able to run up to 100% E85 on stock or upgraded turbos.

What is port injection?

Port injection is a kit that is installed between your intake manifold and the cylinder head that runs off the low-pressure supply to provide you with more fueling than your stock system is capable of.  It's a relatively easy system to install and does not require any permanent modification to your car.

Port injection kits are offered in five different packages to meet your needs:

Base port injection kit: (included in Bronze, Silver or Platinum Kits)

  • Fuel-It! custom black anodized spacer for the intake manifold
  • Fuel-It! custom black anodized fuel rail
  • Black anodized aluminum and stainless steel hardware
  • Dual fuel supply port for those that are running inlets in the stock location (email us for info)
  • Optional return port for those that will be running an upgraded fuel pressure regulator 
  • Six of the following:
    • Flow matched Bosch injectors (52#)
    • Extended length steel bolts for mounting your new spacer 
    • BMW OEM gaskets

Bronze kit includes:

  • Base port injection kit
  • Basic fuel line connection kit
    • Two custom Fuel-It! fittings to maintain your stock fuel line connections at the HPFP and the feed line as it enters the engine bay
    • -6an (3/8") upgraded fuel lines
    • High flow custom Fuel-It! "Y" adapter
    • -6an fuel rail connection

Silver kit includes:

  • Base port injection kit
  • Basic fuel line connection kit​
  • An upgraded fuel line that completely replaces the stock fuel line

Platinum kit includes:

  • Base port injection kit
  • Basic fuel line connection kit​
  • An upgraded fuel line that completely replaces the stock fuel line​
  • Integrated ethanol sensor​
  • Bluetooth and JB4 compatible ethanol analyzer
    • JB4 integration compatible 0-5volt
    • Bluetooth (iPhone or Android app must be purchased to use this feature)

*These kits are available for off-road use only

*All port injection kits are built to order.

*Ethanol Sensors don't actually read the ethanol content, the readings are based on the absence of gasoline, so if your fuel is contaminated, your ethanol readings may be artificially elevated.

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