Mercedes-AMG M157 Spool Stage 3 Low Pressure Fuel Pump Upgrade

The Spool Stage 3 low pressure fuel pump upgrade for the Mercedes-AMG M157 removes the in-tank pump as a bottleneck on high-output builds, especially on E85.

Why you need it

The primary pump keeps fuel flowing steadily while a second pump comes in under boost, nearly doubling the flow of the factory pump and supporting fueling demands up to and beyond 1200 whp. It is built with ethanol-resistant parts and works with the car's existing fuel management.

Fits

• Mercedes-AMG E63 (M157)
• Mercedes-AMG CLS63 (M157)
• Mercedes-AMG GLE63 (M157)
• Mercedes-AMG S63 (M157)
• Mercedes-AMG SL63 (M157)

Features

• Twin-pump design with the second pump activating under boost
• Nearly double the flow of the OEM pump
• Supports 1200+ whp of low pressure fueling
• Ethanol-resistant materials for E85
• Upgraded wiring and fuel line layout for the extra flow

Good to know

Pair with upgraded high pressure pumps or turbos and a matching tune for best results. Professional installation is recommended.