Mercedes-AMG M133 Spool FX-350 High Pressure Fuel Pump Kit

The Spool FX-350 high pressure fuel pump kit for the Mercedes-AMG M133 raises the fueling ceiling of the M133 so you can run bigger turbos and higher ethanol blends.

Why you need it

The stock high pressure fuel pump on the M133 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 models with the M133 2.0L turbo four

What's included

• 1 x Spool FX-350 upgraded high pressure fuel pump
• 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

Confirm your engine code before ordering. 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.