Spool Stage 3 LPFP BMW [B58 Gen.1]

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Pre order / made-to-order products

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This condition applies to the following product categories:

• Suspension
• Engine Tuning
• Engine Parts
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• 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.

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Spool Stage 3 LPFP | BMW B58 Gen.1

The Spool Performance Stage 3 LPFP is a drop-in low-pressure fuel pump (LPFP) upgrade for BMW B58 Gen1 engines. This solution is designed to eliminate low-pressure fuel side limitations, especially with high power outputs and E85 use.

Product Description

As high-pressure fuel pumps (HPFPs) become more efficient, the standard low-pressure pump often becomes a bottleneck in the system. The Stage 3 LPFP solves this with a dual-pump design that ensures adequate fuel supply even under demanding conditions.

• Drop-in assembly
• Dual pump system
• Secondary pump activates based on boost pressure
• Almost 2x flow compared to stock
• Supports over 1000 whp low-pressure capacity
• Full E85 compatibility

Operating Principle

• Primary pump operates normally under light load
• Secondary pump activates as boost increases
• Provides additional fuel under high loads
• Ensures consistent supply to the HPFP system

Why is an upgrade necessary?

The stock LPFP of the B58 Gen1 engine limits performance:

• E85 significantly increases fuel demand
• High power requires more fuel
• HPFP cannot operate optimally without adequate supply

Stage 3 LPFP:

• Removes the low-pressure side bottleneck
• Improves system reliability
• Enables high power levels

Package contents

• Pre-assembled drop-in LPFP unit
• Secondary pump activation harness
• 10 psi Hobbs switch (depending on selected harness)

Compatibility

BMW B58 Gen1 engine models, including:

• F20 / F21 M140i / M140iX (LCI)
• F22 / F23 M240i / M240iX (also LCI)
• F30 / F31 / F34 340i / 340iX (LCI)
• F32 / F33 / F36 440i / 440iX (also LCI models)