Mercedes-AMG E63 Spool FX-350 High Pressure Fuel Pump Kit

The Spool FX-350 high pressure fuel pump kit for the Mercedes-AMG E63 raises the fueling ceiling of the M177 so you can run bigger turbos and higher ethanol blends.

Why you need it

The stock high pressure fuel pump on the M177 runs out of capacity fast once you start tuning. The FX-350 delivers fuel at 35 MPa (350 bar) versus 25 MPa on the FX-200, adds about 90% more flow than stock and lets your injectors flow up to 40% more fuel before they hit the injection window limit. The higher pressure also atomizes fuel better for a more complete burn.

Fits

• Mercedes-AMG E63 / E63 S (M177)

What's included

• 2 x Spool FX-350 upgraded high pressure fuel pumps
• Bosch-spec 10-micron high-flow fuel filter
• Upgraded fuel lines and all install hardware
• Spool wireless ethanol content analyzer kit with phone app (if selected)

Spool 10-micron filter

The included filter unit protects the high pressure pumps and injectors from debris without a noticeable pressure drop on the low side.

Good to know

Choose at checkout whether to add the ethanol analyzer or use one you already have. The added fueling is used through a tune. Professional installation is recommended.