Upgrade the fuel system in your BMW F10/F12 with a complete high-performance low-pressure fuel pump solution built for increased power demand, ethanol fuels, and reliable performance on both street and track.
Designed for the BMW 535i, 535i xDrive, and 640i, this Precision Raceworks fuel pump assembly replaces the factory unit with a higher-flow Walbro-based system capable of supporting demanding tuned and upgraded-engine applications. Unlike universal pump conversions that require cutting, splicing, or piecing together individual components, these assemblies arrive pre-built for a straightforward installation.
The pump system retains an OEM-style bucket design to help keep the primary fuel pump submerged during low fuel levels, hard acceleration, cornering, and other high-G conditions. This makes it well suited to everything from daily-driven performance cars to dedicated high-horsepower builds.
Choose the Fueling Capacity for Your Build
Stage 2 – Walbro 450
The Stage 2 setup uses a single genuine Walbro 450 F90000274 pump and delivers approximately 2.4 liters per minute at 72 psi (5 bar).
It supports up to:
This is an excellent choice for modified street cars that need substantially more fuel capacity than the factory pump while retaining a simple, OEM-style installation.
Stage 2.5v2 – Walbro 535
For builds requiring additional headroom, Stage 2.5v2 steps up to a genuine Walbro 535 F90000285 pump with approximately 3.1 liters per minute of flow at 72 psi (5 bar).
It supports up to:
Stage 2.5v2 provides an ideal middle ground for higher-output turbo setups that need greater ethanol fueling capacity without moving to a dual-pump arrangement.
Stage 3 – Dual Walbro 450
High-horsepower builds can move to the Stage 3 bucketed/bucketless hybrid system. This configuration combines a Walbro 450 inside the pump bucket with a second Walbro 450 mounted outside the bucket, increasing total fuel delivery to approximately 5 liters per minute.
Stage 3 supports up to:
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850 WHP on pump gasoline
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800 WHP on 100% E85
The system includes the required wiring and pump activation/Hobbs switch for the secondary pump, providing serious fueling capacity for heavily modified and racing-focused applications.
Complete, Ready-to-Install Assembly
Rather than reusing an aging factory pump assembly, the kit includes new supporting components for a more complete fuel-system refresh.
Depending on the selected stage, the package includes:
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New genuine OEM fuel pump bucket assembly
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Genuine Walbro high-performance fuel pump(s), pre-installed
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New fuel sending unit / fuel-level sensor
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New primary fuel filter
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New secondary fuel filter
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Required Stage 3 wiring and activation components where applicable
With no core exchange required and minimal assembly work, this is a practical way to increase low-pressure fuel capacity while maintaining an installation designed around the factory BMW fuel tank.
Built for Ethanol-Fueled Performance
The factory BMW pump is not intended for full E85 operation. These upgraded Walbro-based configurations are designed for ethanol-compatible fueling, making them a strong supporting modification for flex-fuel, E85, upgraded turbo, and high-boost BMW builds.
Whether you're preparing a responsive daily driver, a powerful highway setup, or an 800+ WHP race build, the available stages allow you to select the fuel capacity that matches your current setup while leaving room for future upgrades.
Vehicle Fitment
Fits:
A high-flow, ethanol-ready fuel system is one of the most important supporting upgrades when increasing power. The Precision Raceworks F10/F12 High-Performance Fuel Pump provides the flow capacity, quality components, and near plug-and-play installation needed to confidently support your BMW's next level of performance.
