Spool FX-350 HPFP BMW [B58 Gen.2]

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Our warehouse is located in Nokia, Finland.

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The delivery time for products in stock is 1-5 business days. We ship worldwide.

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• You must return the ordered products within 14 days of receiving
• The products must be unused and without damages
• Commission fee for handling returns is 21,90€
• For product returns, the customer is in charge of the return costs. Only door to door service (Express)
• Shipping costs are not refunded

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Return address: QT Parts, Vasarakatu 8B, 37150 Nokia, Finland.

Pre order / made-to-order products

If the product you have ordered is a pre order or made-to-order item, it is not subject to the 14-day right of withdrawal or return under consumer protection laws, as the product is manufactured or sourced specifically based on the customer’s individual order.

If you wish to cancel your order before receiving the product, we will refund 50% of the total order amount.

This condition applies to the following product categories:

• Suspension
• Engine Tuning
• Engine Parts
• Exhaust Systems
• Fueling
• Turbochargers/superchargers
• Drivetrain
• ECE-approved Downpipes

All of the above products are manufactured or sourced individually based on the customer’s order, and therefore cannot be returned after delivery, unless the product has a manufacturing or material defect.

In the event of such a defect, the standard liability for defects as provided by consumer protection legislation shall apply.

Spool FX-350 HPFP Upgrade | BMW B58 Gen.2

The Spool Performance FX-350 is a top-tier high-pressure fuel pump (HPFP) for BMW B58 Gen2 engines. This solution is designed for maximum performance with direct injection, offering up to 350 bar operating pressure and significantly expanded fuel capacity without a port injection system.

What is the FX-350?

The FX-350 is an advanced HPFP, manufactured from stainless steel and equipped with a DLC-coated piston and cylinder for high wear resistance and precision.

• Operating pressure up to 350 bar / 35 MPa / 5000 psi
• Same flow rate as FX-200, but with significantly higher pressure
• Optimized for high RPMs and loads
• Plug & Play installation

Compatibility with Spool Gen2 high lift cam lobe upgrade:

• Increases overall fuel output
• Specially designed springs prevent valve float at high RPMs

Performance

HPFP only:

• Gasoline: approx. 800 whp
• E50: approx. 670 whp
• E85: approx. 600 whp

HPFP + IFX150 Gen2 injectors:

• Gasoline: approx. 900 whp
• E50: approx. 740 whp
• E85: approx. 660 whp

HPFP + IFX150 Gen2 injectors + cam lift mod:

• Gasoline: approx. 1050 whp
• E50: approx. 950 whp
• E85: approx. 800 whp

Intended Use

The FX-350 is specifically designed for DI-only high-power configurations:

• Enables very high power without additional injection
• Optimized to work with IFX150 Gen2 injectors
• Removes a significant limitation of the B58 Gen2 fuel system

Installation

• Fully Plug & Play
• Includes all necessary components for a clean and easy installation

Package Contents

• Spool FX-350 High-Pressure Fuel Pump
• Mounting bracket
• Pump alignment tool
• Triple-layer low-pressure hose (nylon / steel braid / PTFE)
• Plug & Play HPFP adapter harness

Software Requirements

• Requires software modifications before commissioning
• Support for various flash platforms is under development
• Spool can assist with implementing the necessary calibration changes

Important Note: LPFP

The low-pressure fuel system is critical:

• Insufficient supply can cause cavitation and damage
• Such damage is not covered by warranty
• An upgraded LPFP is practically essential

Warranty

• Lifetime warranty against manufacturing and material defects

Compatibility

Suitable for, among others, the following B58 Gen2 models:

• G42 / G43 M240i, M240xi
• G20 / G21 M340i, M340xi
• G22 / G23 / G26 M440i, M440xi
• G30 / G31 540i, 540xi
• G05 X5 40i
• G06 X6 40i
• G07 X7 40i
• G01 X3 M40i
• G02 X4 M40i
• G29 Z4 M40i
• G32 640i, 640xi
• G11 / G12 740i, 740xi
• G15 / G16 840i, 840xi