Precision Raceworks BMW F Series N20/N26/N55 High Performance Fuel Pump

The Precision Raceworks BMW F Series N20/N26/N55 High Performance Fuel Pump is a premium, plug-and-play fuel system upgrade engineered to deliver exceptional fueling performance for both street and track applications. Designed for BMW F Series models running the N20, N26, and N55 engines, this system allows enthusiasts to confidently run all blends of E85 while achieving stable, high-flow fuel delivery capable of supporting up to 1,000+ wheel horsepower.

This fully assembled replacement unit includes a new genuine OEM fuel pump bucket assembly, Walbro high-performance fuel pumps, new fuel filters, and a new sending unit. No core exchange or modification is required—simply install the pump and experience smoother fueling, better throttle response, and reliable performance at every power level.

High-Performance Fuel Delivery, Simplified

Precision Raceworks engineered these systems to eliminate the limitations of BMW’s factory fuel pump setup, which struggles to maintain consistent fuel pressure under high load or ethanol-blended conditions. Each Stage 2–3.75 system is specifically calibrated to deliver consistent low-pressure fueling for engines producing anywhere from 500 to over 1,000 wheel horsepower, depending on configuration.

The pumps are designed to keep the primary fuel pump fully submerged at all times, regardless of tank level or g-force, ensuring reliable fuel delivery during aggressive acceleration, cornering, or track driving. Whether you’re building a daily-driven street car or a dedicated high-power setup, this system delivers OEM-level fitment with race-proven performance.

Stage Options & Specifications

Stage 2 (2.2 LPM)

• Features a single Walbro 450 (F90000274) pump

• Supports up to 575 WHP (500 WHP on full E85)

• Fully drop-in design – no wiring, cutting, or assembly required

• Ideal for high-performance street and moderate track builds

Included:

• OEM fuel pump bucket assembly

• Pre-assembled Walbro 450 pump

• Fuel sending unit

• New primary and secondary filters

Stage 2.5v2 (3.5 LPM)

• Features a single Walbro 535 (F90000295) pump

• Supports up to 675 WHP (600 WHP on full E85)

• Maintains OEM-level fitment and installation ease

• Suitable for vehicles running higher ethanol blends and boost levels

Included:

• OEM fuel pump bucket assembly

• Pre-assembled Walbro 535 pump

• Fuel sending unit

• New primary and secondary filters

Stage 3 (5 LPM)

• Dual-pump hybrid bucketed/bucketless design

• Includes two Walbro 450 (F90000274) pumps

• Supports up to 850 WHP (800 WHP on full E85)

• Includes plug-and-play boost reference harness and Hobbs switch for automatic secondary pump activation

Included:

• OEM fuel pump bucket assembly

• Dual Walbro 450 pumps

• Fuel sending unit

• Boost reference harness (no cutting or splicing)

• Primary & secondary filters

Stage 3.5 (6 LPM)

• Hybrid system featuring one Walbro 450 (F90000274) and one Walbro 525 (F90000285)

• Supports up to 950 WHP (875 WHP on full E85)

• Includes Hobbs switch and boost reference harness for seamless operation

Included:

• OEM bucket assembly

• Dual pumps (450 + 525)

• Fuel sending unit

• Filters, harness & 13 psi Hobbs switch

Stage 3.75 (6.5 LPM)

• Ultimate setup featuring one Walbro 535 (F90000295) and one Walbro 525 (F90000285)

• Supports 1,000+ WHP (950 WHP on full E85)

• Drop-in fitment with zero wiring modifications

• Perfect for high-boost, ethanol-fuelled performance builds

Included:

• OEM bucket assembly

• Dual pumps (535 + 525)

• Fuel sending unit

• Filters, harness & 13 psi Hobbs switch

Key Features & Benefits

• 100% E85 Compatible: Built for ethanol-blended fuels and high-performance applications.

• Fully Assembled & Drop-In Ready: No cutting, crimping, or wiring required—installs just like the OEM unit.

• OEM Reliability with Race-Level Performance: Combines factory fitment with the flow capacity of high-performance fueling.

• Enhanced Fuel Stability: Prevents pressure drop and fuel starvation even under heavy acceleration or track conditions.

• New OEM Components: Includes new bucket, fuel filter, and sending unit—no core exchange or rebuilds required.

• Wide Power Support Range: From mild ethanol setups to full high-boost, high-horsepower builds.

• Plug-and-Play Installation: Designed for DIY installation at home or professional fitting at a workshop.

Compatibility

• BMW 2 Series: 228i, 228i xDrive, M235i, M235i xDrive (2014–2016)

• BMW 3 Series: 320i, 320i xDrive, 328i, 328i xDrive, 335i, 335i xDrive, 335i GT xDrive (2012–2018)

• BMW 4 Series: 428i, 428i xDrive, 428i Gran Coupé, 435i, 435i xDrive, 435i Gran Coupé (2014–2016)

• BMW M2 (F87): 2016–2018

Compatible with all N20, N26, and N55 engines.

Why Choose Precision Raceworks?

Precision Raceworks is trusted worldwide for engineering high-quality, plug-and-play fueling systems that deliver proven results. Each pump is developed using extensive real-world testing, guaranteeing reliable operation on both pump fuel and E85. Whether you’re pushing 500 WHP or chasing 1,000+, this kit ensures consistent, safe, and efficient fuel delivery under any driving condition.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.