Take your BMW F-Series N55 or N20 to the next level with the OneFastShop Stage 3.5 Dual Walbro 450 + 535 Low Pressure Fuel Pump (LPFP) assembly. Designed for high-boost, ethanol-based, and port-injected builds, this complete plug-and-play LPFP upgrade delivers the fuel volume required to support up to 950 WHP on pump gas or 875 WHP on full E85. Direct replacement for BMW OEM part #16117243975.
The dual pump system pairs a Walbro F90000274 450LPH primary pump with a Walbro F90000295 535LPH secondary pump and includes a boost-referenced pressure switch (Hobbs switch) for automatic secondary pump activation. Arrives fully pre-assembled with all wiring, fittings, and hardware pre-configured - no splicing, cutting, or crimping required. Compatible with Reflex and Pro EFI controllers, and suitable for stock or heavily modified applications.
| Part Number | N55STG35LPFP |
| Pumps | 1x Walbro 450LPH (F90000274) + 1x Walbro 535LPH (F90000295) |
| OEM Replacement | BMW #16117243975 |
| Max Power Support | 950 WHP (pump gas) / 875 WHP (E85) |
| Secondary Pump Control | Boost-referenced pressure switch (Hobbs switch) |
| Fuel Compatibility | 91-93 octane, E85, ethanol blends, methanol injection |
| Controller Compatibility | Reflex, Pro EFI |
| Installation | Plug-and-play, no wiring modifications |
| Application | Port injection and upgraded turbo setups |
| Year | Make | Model | Chassis | Engine |
|---|---|---|---|---|
| 2014-2016 | BMW | 228i / 228i xDrive | F22 / F23 | N20 |
| 2014-2016 | BMW | M235i / M235i xDrive | F22 / F23 | N55 |
| 2016-2018 | BMW | M2 | F87 | N55 |
| 2013-2016 | BMW | 320i / 320i xDrive | F30 | N20 |
| 2012-2016 | BMW | 328i / 328i xDrive | F30 / F31 | N20 |
| 2012-2015 | BMW | 335i / 335i xDrive | F30 / F31 | N55 |
| 2014-2016 | BMW | 328i GT xDrive | F34 | N20 |
| 2014-2016 | BMW | 335i GT xDrive | F34 | N55 |
| 2014-2016 | BMW | 428i / 428i xDrive (incl. Gran Coupe) | F32 / F33 / F36 | N20 |
| 2014-2016 | BMW | 435i / 435i xDrive (incl. Gran Coupe) | F32 / F33 / F36 | N55 |
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Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
