Spool Stage 3 LPFP E63, CLS63, GLE63, S63, SL63 [M157]

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This condition applies to the following product categories:

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Spool Stage 3 LPFP | Mercedes-AMG M157 (E63, CLS63, GLE63, S63, SL63)

The Spool Performance Stage 3 LPFP is an advanced low-pressure fuel pump (LPFP) upgrade for Mercedes-AMG M157 engines. The system is designed to meet the increased fuel demands of high-horsepower setups and eliminate the limitations of the factory system.

Product Description

Stock low-pressure fuel pumps often become a bottleneck, especially when running E85 and at high power levels. The Stage 3 LPFP solves this with a dual-pump design that operates synchronously with boost pressure.

• Dual pump system
• Secondary pump activates with boost pressure
• Nearly 2x flow compared to stock
• Supports over 1200 whp low-pressure capacity
• Full E85 compatibility
• Designed to work with OEM fuel system

Operating Principle

• Primary pump maintains steady supply during normal operation
• Secondary pump activates as boost increases
• Increases fuel flow at high loads
• Reduces the risk of fuel starvation at high power

Technological Enhancements

• Dual pump configuration for optimal supply
• Significantly increased flow capacity
• Reinforced electrical and fuel lines for high loads
• Ethanol-resistant components for longevity

Why is an upgrade necessary?

The M157 engine's stock LPFP is insufficient for demanding tuned setups:

• E85 significantly increases fuel demand
• Larger turbos and HPFP upgrades require more supply
• Insufficient supply can limit power and reliability

Stage 3 LPFP:

• Eliminates the low-pressure side bottleneck
• Improves fuel delivery accuracy
• Enables very high power levels

Compatibility

Mercedes-AMG M157 engine-equipped models:

• E63
• CLS63
• GLE63
• S63
• SL63