![Spool Stage 4 FX400X Upgraded High Pressure Fuel Pump [B58 Gen 2]](http://turbotechperformance.com/cdn/shop/files/image0_ecf14e3a-382b-41e8-a487-f30d5102be23.jpg?v=1775581698&width=2112)
![Spool Stage 4 FX400X Upgraded High Pressure Fuel Pump [B58 Gen 2]](http://turbotechperformance.com/cdn/shop/files/FX350-3-1014x912_4c68713e-5d95-4eed-a94d-70770e97fb04.jpg?v=1775581698&width=1014)
Spool Stage 4 FX400X Upgraded High Pressure Fuel Pump [B58 Gen 2]
THIS PRODUCT IS CURRENTLY ON BACKORDER. CONTACT US AT CUSTOMER_SERVICE@SPOOLPERFORMANCE.US IF YOU HAVE ANY QUESTIONS.
Spool Performance is proud to introduce our flag-ship 350 bar high-pressure fuel pump capable of delivering fuel at 350 bar/ 35Mpa/ 5000psi. The FX400X improves on our existing industry leading FX350 by about 20% across the entire delivery range.
The FX400X coupled with our IFX350 Gen2 DI injectors is a true revolution and the key to DI only high horsepower numbers on the Gen2 BMW high-pressure fuel system.
The FX400X is truly Plug and Play for all platforms we are offering and comes with all the lines and hardware needed for a clean easy install.
As usual, we stand behind our high quality offerings and this product is eligible for our lifetime warranty program.
Tuning changes are required to run the fuel pump and we’re in the process of adding these to the different flashing platforms. Meanwhile our team can assist with adding the required changes to tune files.
Fueling Capabilities with HPFP + IFX350X Gen2 injectors:
Gasoline 1100whp
E50 Mix 900whp
E85 800whp
Fueling Capabilities with HPFP + IFX150 Gen2 injectors+ Spool Cam lift Mod:
Gasoline 1200whp
E50 Mix 1050whp
E85 900whp
What’s included:
Spool Performance FX400X High Pressure Fuel Pump
Mounting Bracket
Pump alignment tool
Triple Layer Low Pressure Line [Nylon over Stainless steel over PTFE]
Plug and Play HPFP Adapter Harness
Note: Proper low pressure fueling is critical to proper normal functioning of the HPFP. Although our pumps are covered by our lifetime warranty program as usual, any damage due to cavitation induced damages to the piston/bore would be excluded from coverage. Please make sure you are running an upgraded low pressure fuel pump to ensure adequate pressure delivery to the FX400X pump.
Ships within 1-2 business days.
100% Genuine Parts
Fitment Guaranteed
![Spool Stage 4 FX400X Upgraded High Pressure Fuel Pump [B58 Gen 2]](http://turbotechperformance.com/cdn/shop/files/image0_ecf14e3a-382b-41e8-a487-f30d5102be23.jpg?v=1775581698&width=2112)
Spool Stage 4 FX400X Upgraded High Pressure Fuel Pump [B58 Gen 2]
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
Please read our FAQs page to find out more.
Are OEM products more expensive than aftermarket alternatives?
OEM products might have a higher upfront cost compared to aftermarket parts, but their superior quality and durability often make them a more cost-effective choice over time. Investing in OEM ensures you’re getting parts specifically designed for your vehicle, which can lead to better performance and longevity.
Can I purchase OEM parts online or do I need to visit a dealership?
You don’t need to visit a dealership to get OEM parts. You can conveniently purchase genuine OEM components from authorized distributors and reputable online retailers like Turbo Tech Performance. Our online store provides a wide selection of high-quality parts delivered straight to your door.
Are parts from brands like Mopar, ACDelco, and Motorcraft interchangeable between different vehicle brands?
No, parts from Mopar, ACDelco, and Motorcraft are typically designed for specific vehicle brands. It’s crucial to ensure compatibility with your vehicle’s make and model by checking part numbers and consulting with a knowledgeable expert.
Can I install OEM parts myself, or is it better to have a professional handle it?
While some OEM parts can be installed by DIY enthusiasts, the complexity of installation can vary. For the best results and to ensure proper fitment and performance, we recommend having a trained mechanic install the parts, especially if you’re unfamiliar with automotive repairs.
Do OEM parts come with a warranty?
Yes, many OEM auto parts come with a manufacturer’s warranty that covers defects or issues. Be sure to check the warranty details for each part at the time of purchase, and keep your receipt for any potential warranty claims.


