Precision Raceworks BMW N55 High Performance Fuel Pump Upgrade for F Series BMW M135i, M235i, 335i, 435i
The Precision Raceworks F Series N55 High Performance Fuel Pump is the go-to BMW N55 LPFP upgrade for anyone chasing reliable power on petrol or full ethanol. This drop-in, plug-and-play in-tank fuel pump is 100% E85 compliant and built around genuine Walbro hardware for OEM-level reliability with massive flow capacity. Ideal for fast road, track and drag use, it keeps the primary pump fully submerged to maintain consistent fuel pressure under hard acceleration and high g loads.
If you own a BMW M135i, M235i, 335i or 435i and are searching for a BMW N55 fuel pump upgrade, BMW LPFP, E85 fuel pump, Walbro 450 525 535 fuel pump or a drop-in BMW in-tank fuel pump, this is the proven solution. We have fitted these kits at Nforcd in Warwickshire and feedback from our customers has been excellent, praising the simple fitment, quiet operation and rock-solid fueling on tuned N55 engines.
Why choose this BMW N55 LPFP upgrade
- 100% E85 compliant low pressure fuel pump for BMW F Series N55
- Genuine Walbro hardware with up to 300% more flow than stock
- Fully assembled drop-in bucket for true plug-and-play fitment
- Consistent fuel delivery under cornering and acceleration
- Perfect for hybrid turbos, big turbo builds and ethanol blends
- Stage options to match your power target from 500 to 1000+ whp
Key features
- 10 gauge oxygen free copper wiring for high current stability
- 100% plug and play installation with no cutting or crimping
- Stage 3 and above include a pre-set 13 psi boost reference switch and activation wiring
- New pump, new fuel filter and new fuel level sending unit included
Stage options and specifications
Stage 2 - 2.4 gallons per minute
Single Walbro 450 pump F90000274. Supports up to 575 whp. Rated for 500 whp on 100% E85. Direct drop-in like OEM with zero wiring mods.
Included in the box
- New genuine OEM fuel pump bucket assembly
- Pre-assembled with genuine Walbro 450 pump
- New fuel sending unit fuel level sensor
- 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% E85. Direct drop-in, OEM quality, plug-and-play.
Included in the box
- New genuine OEM fuel pump bucket assembly
- Pre-assembled with genuine Walbro 535 pump
- New fuel sending unit fuel level sensor
- New primary and secondary fuel filters
Stage 3 - 5 gallons per minute
Bucketed and bucketless hybrid system. Primary in-bucket Walbro 450 F90000274 plus a secondary external Walbro 450 F90000274. Supports 850 whp. Rated for 800 whp on 100% E85. Includes all required wiring and a Hobbs switch for secondary pump activation. Drop-in installation.
Included in the box
- New genuine OEM fuel pump bucket assembly
- Pre-assembled with dual genuine Walbro 450 pumps
- New fuel sending unit fuel level sensor
- New primary and secondary fuel filters
Stage 3.5 - 6 gallons per minute
Bucketed and bucketless hybrid system. Primary in-bucket Walbro 450 F90000274 with a secondary Walbro 525 F90000285. Supports 950 whp. Rated for 875 whp on 100% E85. Includes plug-and-play boost reference harness and 13 psi Hobbs switch.
Included in the box
- New genuine OEM fuel pump bucket assembly
- Pre-assembled with Walbro 450 primary and Walbro 525 secondary
- New fuel sending unit fuel level sensor
- New primary and secondary fuel filters
- Plug-and-play boost reference harness
- 13 psi boost reference switch Hobbs switch
Stage 4 v2 - 6 gallons per minute
Bucketed and bucketless hybrid system. Primary in-bucket Walbro 535 F90000295 with a secondary Walbro 525 F90000285. Supports over 1,000 whp. Rated for 950 whp on 100% E85. Includes plug-and-play boost reference harness and 13 psi Hobbs switch.
Included in the box
- New genuine OEM fuel pump bucket assembly
- Pre-assembled with Walbro 535 primary and Walbro 525 secondary
- New fuel sending unit fuel level sensor
- New primary and secondary fuel filters
- Plug-and-play boost reference harness
- 13 psi boost reference switch Hobbs switch
Vehicle compatibility
Designed for BMW F Series models running the N55 platform. Also listed for select 228i, 328i and 428i applications. Includes xDrive models.
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+ whp
Fitting and support
Professional fitting available at Nforcd in Warwickshire. Request a quote at Sales@nforcd.com. We are happy to advise on the right Stage for your build, whether you are targeting a dependable BMW N55 daily with ethanol capability or a 1000 whp track-focused BMW fuel system upgrade.
Compatibility check before dispatch
To ensure the part fits your vehicle we run a compatibility check before shipping. Please provide your UK registration or the last 7 digits of your VIN at checkout.
Manufactured by
Precision Raceworks
Keywords for search: BMW N55 fuel pump upgrade, BMW M135i fuel pump, BMW M235i fuel pump, BMW 335i fuel pump, BMW 435i fuel pump, BMW LPFP, BMW F20 F21 F22 F23 F30 F31 F32 F33 F36 fuel pump, E85 compatible fuel pump, Walbro 450 525 535, F90000274 F90000285 F90000295, BMW in-tank fuel pump, drop-in fuel pump, plug and play fuel pump, BMW N55 ethanol fuel system upgrade.