Spool Performance B58 Gen2 FX400X Upgraded High Pressure Pump

Spool Performance introduces the FX400X, a flagship high-pressure fuel pump designed for the B58 Gen2 platform, capable of delivering fuel at an impressive 350 bar (35 Mpa/5000 psi). Building upon the industry-leading FX350 pump, the FX400X offers a 20% improvement in fuel delivery across the entire range. When paired with Spool’s IFX350 Gen2 DI injectors, this system delivers outstanding performance for high-horsepower applications, making it a key component in achieving impressive power figures on the Gen2 BMW platform.

The FX400X is fully plug-and-play for all compatible platforms and comes with all necessary hardware for a straightforward installation. With Spool Performance’s commitment to quality, this high-pressure fuel pump is backed by a lifetime warranty. Tuning changes are required, and Spool is actively working to support various flashing platforms while offering immediate assistance with tuning file modifications.

Fueling Capabilities with HPFP + IFX350X Gen2 Injectors:

• Gasoline: Up to 1100whp
• E50 Mix: Up to 900whp
• E85: Up to 800whp

Fueling Capabilities with HPFP + IFX150 Gen2 Injectors + Spool Cam Lift Mod:

• Gasoline: Up to 1200whp
• E50 Mix: Up to 1050whp
• E85: Up to 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

Important Note:

Proper low-pressure fueling is critical for the normal operation of the FX400X. Although the pump is covered by Spool’s lifetime warranty, damages due to cavitation-induced wear on the piston or bore are not covered. It’s essential to use an upgraded low-pressure fuel pump to ensure adequate pressure delivery to the FX400X.

Note: 'New' merchandise may be returned for exchange or refund within 15 days from the date of shipment. 'New' merchandise must be unused and free from installation or mounting damage. Installation or modification of parts waives your right to returns, refunds, or exchanges.