Introducing the AMTuned HPFP upgrade kit for the Audi B8.5 RS5 4.2L platform. Needing more fuel for your higher stage vehicle upgrades? This is for you! By increasing the pump piston diameter, a higher volume of fuel is able to be pushed from the pump helping solve fuel deficiency problems with modified vehicles.
Compatible with all fuels.
Kit Includes (Assembled):
- 2x Upgraded piston assembly as pictured