Spool Performance FX-350 High Pressure Fuel Pump Kit (Racing)
Mercedes-AMG M177 / M178
Racing high-pressure fuel pump upgrade for AMG 4.0 V8 Biturbo – maximum flow rate and highest pressure stability for uncompromising high-power setups.
Description
The Spool Performance FX-350 High Pressure Fuel Pump Kit was developed for high-performance setups based on the AMG 4.0-liter V8 biturbo engines (M177 & M178) . The focus is on a significantly increased delivery rate in the high-pressure system compared to standard pumps and conventional upgrades, ensuring a stable, consistent, and precise fuel supply even with extreme injection quantities. The FX-350 version is designed for vehicles where high-performance fuel supply cannot be a limiting factor – ideal for large turbos, high boost pressures, and demanding motorsport applications.
Technology & Construction
- High-performance high-pressure pump with extremely increased delivery capacity (FX-350)
- Optimized piston and valve geometry for maximum delivery rate
- Very high flow rate compared to the standard pump
- Designed for high injection pressures and extreme continuous loads
- Consistent racing design for very high performance levels
Application area & performance
- Maximum high-pressure supply even at extreme performance levels
- Prevention of pressure drops in the high-pressure system at full load
- Ideal for upgraded turbochargers, high boost pressures and e-/race fuels
- Perfect basis for Stage 4, Stage 5 and Beyond setups
Advantages compared to standard high-pressure pumps
- Significantly increased fuel delivery rate
- Maximum power reserve under full load
- High stability under high thermal stress
- Racing-ready design without compromise
- Proven spool performance quality
compatibility
- Mercedes-AMG C63 / C63 S – M177
- Mercedes-AMG E63 / E63 S – M177
- Mercedes-AMG G63 – M177
- Mercedes-AMG S63 – M177
- Mercedes-AMG GLC 63 / GLC 63 S – M177
- Mercedes-AMG GLE63 / GLE63 S – M177
- Mercedes-AMG GLS63 – M177
- Mercedes-AMG GT 4-door – M177
- Mercedes-AMG GT / GT S / GT C / GT R – M178
Suitable exclusively for vehicles with 4.0 liter AMG V8 Biturbo (M177 / M178).
Notes
Racing equipment – not approved for use on public roads.
Not street legal. Intended exclusively for motorsport, racing, or export vehicles. Installation should only be carried out by a qualified specialist workshop and absolutely requires adjusted engine and fuel tuning .
© Kraftfahrzeug Technik Hannover (KTH)
