Take your BMW N54 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 1,100 WHP on pump gas or 950 WHP on full E85. Direct replacement for BMW OEM part #16147163298.
The dual pump system pairs a Walbro F90000295 535LPH primary pump with a Walbro F90000274 450LPH 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 | N54STG35LPFP |
| Pumps | 1x Walbro 450LPH (F90000274) + 1x Walbro 535LPH (F90000295) |
| OEM Replacement | BMW #16147163298 |
| Max Power Support | 1,100 WHP (pump gas) / 950 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 |
|---|---|---|---|---|
| 2008-2013 | BMW | 128i | E82 / E88 | N52 |
| 2008-2010 | BMW | 135i | E82 / E88 | N54 |
| 2011-2013 | BMW | 135i | E82 / E88 | N55 |
| 2013 | BMW | 135is | E82 / E88 | N55 |
| 2011 | BMW | 1 Series M Coupe | E82 | N54 |
| 2006-2010 | BMW | 323i | E90 | N52 |
| 2006 | BMW | 325i / 325xi | E90 | N52 |
| 2007-2013 | BMW | 328i / 328xi / 328i xDrive | E90 / E91 / E92 / E93 | N52 |
| 2006 | BMW | 330i / 330xi | E90 | N52 |
| 2007-2010 | BMW | 335i / 335xi / 335i xDrive | E90 / E92 / E93 | N54 |
| 2011-2013 | BMW | 335i / 335i xDrive | E90 / E92 / E93 | N55 |
| 2011-2013 | BMW | 335is | E92 / E93 | N54 |
| 2013-2015 | BMW | X1 sDrive28i | E84 | N20 |
| 2013-2015 | BMW | X1 xDrive28i | E84 | N20 |
| 2013-2015 | BMW | X1 xDrive35i | E84 | N55 |
Upgraded pumps draw more current than stock, so if you're on a weak or aged EKP2, it may overheat and shut down. We recommend upgrading to an EKP3.
European spec vehicles: The original top hat may need to be transferred over during installation.
Required tool: A fuel pump lock ring removal tool is required for installation. Our Fuel Pump Lock Ring Removal Tool for BMW E-Chassis, MINI, and Porsche is available separately - add it to your order from our store.
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
