1 1

Precision Raceworks

Precision Raceworks BMW N55 F-Series LPFP Upgrade - E85 Compatible Walbro High-Flow Drop-In Plug-and-Play In-Tank Fuel Pump (M135i, M235i, 335i, 435i) - Stages 2/2.5/3/3.5/4

Precision Raceworks BMW N55 F-Series LPFP Upgrade - E85 Compatible Walbro High-Flow Drop-In Plug-and-Play In-Tank Fuel Pump (M135i, M235i, 335i, 435i) - Stages 2/2.5/3/3.5/4

£505.98
£549.98 £505.98
Sale Sold out
Shipping calculated at checkout.
Pump Selection

Precision Raceworks Lift Pump Module for BMW F Series N55 Engines. Ethanol safe, high-flow Walbro direct-fit upgrade for M135i, M235i, 335i, 435i

Unlock consistent fuelling for serious power with this Precision Raceworks in-tank lift pump system. Built around genuine Walbro hardware and engineered for bioethanol use, it is a direct-fit, plug-in solution that keeps the pump submerged for unwavering fuel pressure during hard launches, high-speed cornering and track use. Perfect for fast road, drag racing and track days on petrol or full ethanol blends.

We run these systems on customer N55 builds at MJ Modifications in Warwickshire and they simply work. Fitment is straightforward, noise is minimal and the fueling headroom is exactly what tuned F series cars need. If you are chasing reliability on flex-fuel, hybrid turbo power or big turbo goals, this is the proven fuel supply upgrade.

Top reasons to choose this N55 in-tank fuel supply upgrade

  • Ethanol ready and flex-fuel friendly for E85, E60, E50 and blends
  • Massive flow capability with genuine Walbro pumps and motors
  • Direct-fit basket module for a true plug-in installation with OEM connectors
  • Stable pressure under acceleration, braking and lateral g loads
  • Stage options to suit anything from stage 1 tunes to four-figure wheel horsepower
  • Up to 300 percent more flow than stock depending on stage selection

Key construction highlights

  • 10 gauge oxygen free copper wiring for current stability and voltage integrity
  • No cutting or crimping required. Supplied as a pre-assembled module
  • Stages 3 and above include a pre-set 13 psi Hobbs style boost switch and activation harness
  • New pump, new fuel filter and new level sender included for a fresh install

Choose your stage

Stage 2 2.4 gallons per minute

Single Walbro 450 pump F90000274. Supports up to 575 whp. Rated for 500 whp on 100 percent E85. OEM-like direct-fit with zero wiring changes.

Included

  • New genuine OEM pump bucket assembly
  • Pre-built with genuine Walbro 450 pump
  • New fuel level sender
  • New primary and secondary fuel filters

Stage 2.5 v2 3.1 gallons per minute

Single Walbro 535 pump F90000285. Supports up to 675 whp. Rated for 600 whp on 100 percent E85. Direct-fit, OEM quality and plug-in installation.

Included

  • New genuine OEM pump bucket assembly
  • Pre-built with genuine Walbro 535 pump
  • New fuel level sender
  • New primary and secondary fuel filters

Stage 3 5 gallons per minute

Hybrid bucketed and bucketless system. Primary in-basket Walbro 450 F90000274 plus a secondary external Walbro 450 F90000274. Supports 850 whp. Rated for 800 whp on 100 percent E85. Includes all wiring and a 13 psi Hobbs switch for secondary pump activation. Direct-fit installation.

Included

  • New genuine OEM pump bucket assembly
  • Pre-assembled with dual genuine Walbro 450 pumps
  • New fuel level sender
  • New primary and secondary fuel filters

Stage 3.5 6 gallons per minute

Hybrid system. Primary in-basket Walbro 450 F90000274 with a secondary Walbro 525 F90000285. Supports 950 whp. Rated for 875 whp on 100 percent E85. Includes plug-in boost reference harness and 13 psi Hobbs switch.

Included

  • New genuine OEM pump bucket assembly
  • Pre-assembled with Walbro 450 primary and Walbro 525 secondary
  • New fuel level sender
  • New primary and secondary fuel filters
  • Plug-in boost reference harness
  • 13 psi boost reference switch Hobbs switch

Stage 4 v2 6 gallons per minute

Hybrid system. Primary in-basket Walbro 535 F90000295 with a secondary Walbro 525 F90000285. Supports over 1,000 whp. Rated for 950 whp on 100 percent E85. Includes plug-in boost reference harness and 13 psi Hobbs switch.

Included

  • New genuine OEM pump bucket assembly
  • Pre-assembled with Walbro 535 primary and Walbro 525 secondary
  • New fuel level sender
  • New primary and secondary fuel filters
  • Plug-in boost reference harness
  • 13 psi boost reference switch Hobbs switch

Vehicle fitment

For BMW F series models with the N55 engine, including xDrive AWD variants. Also listed for select 228i, 328i and 428i applications.

BMW 1 Series

  • F20 2011 to 2015 M135i
  • F21 2011 to 2015 M135i
  • F20 LCI 09 2015 to 06 2019 M135i
  • F21 LCI 09 2015 to 06 2019 M135i

BMW 2 Series

  • F22 09 2015 to 06 2017 228i and M235i
  • F22 LCI 09 2016 to 12 2019 228i and M235i
  • F23 09 2015 to 06 2017 228i and M235i
  • F23 LCI 10 2016 to 12 2019 228i and M235i

BMW 3 Series

  • F30 2011 to 2016 328i and 335i
  • F30 LCI 10 2014 to 10 2018 328i and 335i
  • F31 2011 to 2016 328i and 335i
  • F31 LCI 10 2014 to 06 2019 328i and 335i

BMW 4 Series

  • F32 2013 to 02 2017 428i and 435i
  • F32 LCI 05 2016 to 12 2019 428i and 435i
  • F33 03 2015 to 02 2017 428i and 435i
  • F33 LCI 05 2016 to 12 2019 428i and 435i
  • F36 Gran Coupe 03 2015 to 02 2017 428i and 435i
  • F36 Gran Coupe LCI 05 2016 to 12 2019 428i and 435i

Part numbers

  • 601-0014 Stage 2 575 whp
  • 601-0056 Stage 2.5 675 whp
  • 601-0091 Stage 3 850 whp
  • 601-0123 Stage 3.5 950 whp
  • 601-0124 Stage 4 v2 1000 plus whp

Installation and support

Professional fitting is available at MJ Modifications, Warwickshire. For a quote or booking, email info@mjmodifications.co.uk. We are happy to advise on the best stage for your goals, whether you want a dependable daily on ethanol mix, a hybrid turbo street car or a four-figure horsepower build.

Compatibility check before dispatch

To ensure correct fitment we verify compatibility before shipping. Please provide your UK registration or the last 7 of your VIN at checkout.

Manufactured by

Precision Raceworks

Search-friendly terms customers use

BMW N55 fuel system upgrade, F20 F21 F22 F23 F30 F31 F32 F33 F36 fuel pump module, in-tank lift pump, flex fuel pump for BMW, ethanol safe fuel pump, Walbro F90000274, Walbro F90000285, Walbro F90000295, Walbro 450, Walbro 525, Walbro 535, direct fit fuel pump, plug in fuel pump, M135i fuel pump upgrade, M235i fuel pump upgrade, 335i fuel pump upgrade, 435i fuel pump upgrade, xDrive fuel pump, corn fuel compatible, E85 ready BMW pump, high flow BMW in tank pump, BMW N55 fueling solution, track day fuel pump, drag racing fuel pump, hybrid turbo fueling, big turbo fueling, basket pump assembly, fuel pump bucket, BMW F series performance parts.

View full details