Select Vehicle
BMW
Mini
Create an account to be able to build Wish Lists.
BMW S55 Stage 3 Low-Pressure Fuel-Pump is an advanced upgrade designed to significantly enhance your vehicle's fueling system. Engineered by Spool Performance, a leader in the BMW Forced Induction industry, this fuel pump provides a substantial increase in fuel flow to support high-performance driving. The Stage 3 Low-Pressure Fuel-Pump more than doubles the flow rate of the stock fuel pump and is fully compatible with E85 fuels. It offers a plug-and-play installation for easy integration and comes with a lifetime warranty for peace of mind.
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This is a complete Low-Pressure Fuel Pump (LPFP) upgrade that replaces your stock LPFP assembly with a new E85 certified one. The new Walbro 450 pump provides approximately 100% more flow than stock and this assembly can be purchased one of three ways to meet your needs.
Both options include the following:
To be eligible for a core return, the bucket must be completely stock and undamaged. (Pump itself does not have to be functioning)
+ International customers: Due to different emissions requirements, the top portion of your fuel bucket (top hat) is different and doesn't have a large vent tube connection. For this reason, we are no longer sending the top hat to international customers as this often causes confusion. Those customers will simply re-use their current top hat when installing their Stage 2 pump.
- All Stage 2 assemblies are stock buckets that have been rebuilt and may show signs of being disassembled and rebuilt. They are all flow tested and verified before being shipped.
This product was last offered at the strikethrough price on
09-20-2026
This product was last offered at the strikethrough price on
09-20-2026
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
We are proud to bring out this truly awesome product that makes getting the required Flex Fuel hardware on your BMW with incredible ease and minimal effort, in your own driveway.
Our kit is entirely plug-and-play with the factory vehicle harness. No cutting or splicing of OEM wiring/connectors. It installs in minutes and can be removed without a trace on the car!
Our team used SolidWorks to design a Flow Optimized Flex Fuel Sensor Adapter (FFSA) to ensure fuel flow is unobstructed and with no added pressure drop at full fuel pump flow from the fuel tank to your motor when our kit is installed. This is important when pushing the factory fuel system with all the power Ethanol can provide over petrol!
Flex fuel sensor housing is designed to neatly install into the factory BMW fuel hat location.
Flex Fuel Sensor Adapter also contains two 1/8 NPT ports that allow installation of an auxiliary Fuel Pressure sensor for vehicles that don’t come with an OEM one from the factory for future use. Depending on fitment, either port can be used.
Install the bootmod3 Flex Fuel Plug and Play Kit and flash your flex fuel enabled bootmod3 OTS MultiMap or Custom Map in minutes and you’re off to the races never worrying about alcohol/petrol blend % in your fuel tank. It does not get better or easier than this!
bootmod3 FlexFuel Plug and Play Kit:
Minutes to install at home as opposed to hours at a shop with car up on lift fabricating/cutting into factory fuel lines and splicing/cutting/pinning into OEM electrical
4+ hours in time/cost savings to get going on Flex Fuel as compared to most other kits that require making custom fuel lines, fittings, and custom wiring!
Fully reversible/removable and back to stock without a trace in minutes
Custom 3-piece Aluminum-6061 Flex Fuel sensor adapter with built-in sensor bypass to allow for obstruction-free fuel flow made to fit in the vehicle factory fuel hat area below the rear seat
All connecting points are sealed with fuel-safe Viton O-rings
Flex Fuel Sensor Adapter housing provides additional 1/8 NPT ports for optional Fuel Pressure sensor addition to vehicles without a factory one for bootmod3 CustomROM v2 support
CANBUS Enabled Ethanol Content Analyzer (ECA) that integrates with bootmod3 CustomROM for complete and seamless conversion of your BMW to FlexFuel for bootmod3 Flex Fuel enabled OTS MultiMaps and custom tunes with your bootmod3 tuner of choice
Power/CANBus 4-wire plug-and-play harness
100% Fully Plug and Play harness to the BMW Fuel Controller connectors (EKP3) on S55, N55 vehicles
100% Fully Plug and Play harness on the BMW Body Domain Controller (BDC/FEM) connector on Gen1 F-series B48/B58
Continental Flex Fuel sensor 3-wire harness
Custom Aluminum-6061 CANBus Enclosure for the bootmod3 ECA board
Custom, kink-free teflon braided line allowing plug-and-play installation with the OEM fuel hat and factory 5/16” or 3/8” fuel feed line. No cutting or new lines required.
-6 AN fitting by Racetronix
This product was last offered at the strikethrough price on
08-10-2026
This product was last offered at the strikethrough price on
08-10-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This kit is designed to enhance performance by adding six supplemental low-pressure fuel injectors, capable of supporting 1000+ WHP on E85 and similar high-performance fuels.
Crafted with precision, the manifold spacers are CNC machined and anodized to ensure durability and prolonged service life. Each kit comes complete with all necessary installation hardware, a gasket set, and a plug-and-play fuel line adapter for seamless integration.
The Elite kit stands out with its sleek black anodized finish and includes an additional return port, an upgraded fuel line, and enhanced machining to accommodate a wider range of applications, including the BMW S55 engine.
A port injection controller is not included. This is required for a complete installation.
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)
Bronze kit includes:
Silver kit includes:
Platinum kit includes:
*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.
This product was last offered at the strikethrough price on
07-23-2026
This product was last offered at the strikethrough price on
07-23-2026
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.