All parts![Spool Performance FX-350 Upgraded High Pressure Fuel Pump System — [M133]](/_next/image?url=%2Fimages%2Fparts%2Fspool-performance-fx-350-upgraded-high-pressure-fuel-pump-system-m133.jpg&w=3840&q=75)
Spool Performance · Fuel System
FX-350 Upgraded High Pressure Fuel Pump System — [M133]
$2,799.00
An upgraded high-pressure fuel pump system. Factory rail pressure becomes the hard limit on high-output and ethanol calibrations — this restores pressure under load so the tune can safely make what the hardware allows. Essential for Stage 3 builds.
Fitment
Mercedes-AMG A45 / CLA45 / GLA45 — M133
- Complete upgraded HPFP system
- Supports E30–E85 ethanol blends
- Removes the factory fuelling ceiling
- Required for most Stage 3 builds
Requires a supporting calibration. Do not run upgraded fuelling on a stock tune.
![Spool Performance Stage 3 Low Pressure Fuel Pump — C63 [M177]](/_next/image?url=%2Fimages%2Fparts%2Fspool-performance-stage-3-low-pressure-fuel-pump-c63-m177.jpg&w=3840&q=75)
![Spool Performance Stage 3 Low Pressure Fuel Pump — E63 [M177]](/_next/image?url=%2Fimages%2Fparts%2Fspool-performance-stage-3-low-pressure-fuel-pump-e63-m177.jpg&w=3840&q=75)
![Spool Performance Stage 3 Low Pressure Fuel Pump — GT63 [M177]](/_next/image?url=%2Fimages%2Fparts%2Fspool-performance-stage-3-low-pressure-fuel-pump-gt63-m177.jpg&w=3840&q=75)
Ready to get A1Tuned?
Tell us about your vehicle and your goals. We'll review your request and send an honest, itemized quote — no pressure, no hype.