Audi C8 RS6 Avant Spool FX-350 High Pressure Fuel Pump Kit

The Spool FX-350 high pressure fuel pump kit for the Audi C8 RS6 Avant raises the fueling ceiling of the EA825 so you can run bigger turbos and higher ethanol blends.

Why you need it

The stock high pressure pumps on the RS6 become a bottleneck once you tune for more power. The FX-350 uses a bigger bore for about 90% more flow than stock and runs up to 35 MPa (350 bar) versus 25 MPa on the FX-200, which lets the injectors flow up to 40% more fuel with shorter injection times and better atomization. It is fully E85 compatible and plug and play, with no cutting or splicing.

Fits

• Audi RS6 Avant (C8, EA825 4.0T V8)

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 installation hardware
• Spool wireless ethanol content analyzer kit with phone app (if selected)

Good to know

Choose at checkout whether to add the ethanol analyzer, use one you already have, or skip it. Calibration changes are required to prevent damage, and Spool supplies calibration details to your tuner. A low pressure fuel upgrade is recommended so the pumps always get enough supply. Professional installation is recommended.