Description

The stock C4 wiring to the fuel pump is adequate for stock power. Once you start turning up the wick though, every last ounce of power needs to get to your fuel pump to ensure you've got the power to supply the motor with enough fuel at full boost.

This kit makes that as easy as possible. The relay and fuse holder get installed just behind the battery, then a pre-terminated harness routes behind the seat to the tank access panel. The stock pins get pulled out of the connector and the new pins on the 034 harness with heavy gauge wire get inserted into the stock connector.

Then with a single but-splice connection (heat shrink splice providede with kit) to the original fuel pump power, your new relay system is up and running. Kit include full install instructions and diagrams. There is no simpler option out there!

Recommended Fuel Pumps

• Bosch 040 "High-Output"
  • 500 Horsepower-Capable
  • Flow at 55 PSI: 175 LPH
  • Flow at 75 PSI: 155 LPH
• Bosch 044 "Motorsport"
  • 700 Horsepower-Capable
  • Flow at 55 PSI: 265 LPH
  • Flow at 75 PSI: 250 LPH

Fitment

• C4 Audi S4/S6 AAN
• B3 Audi Coupe Quattro I5 20V
• B3 Audi 90 Quattro I5 20V
• B3/B4 Audi S2/RS2
• B4 Audi 90 Quattro
• B5 Audi A4/S4/RS4
• C5 Audi A6/Allroad
  • The C5 Audi A6/Allroad will only accept the Bosch 040 "High-Output" Fuel Pump. The Bosch 044 "Motorsport" Fuel Pump is too tall to fit into the tank.
• B6 Audi A4
  • The B6 Audi A4 will only accept the Bosch 040 "High-Output" Fuel Pump. The Bosch 044 "Motorsport" Fuel Pump is too tall to fit into the tank.

Installation Instructions

The installation of your 034Motorsport C4 Fuel Pump Relay Kit is a relatively simple process that will take approximately 60-90 minutes to complete. You can access our detailed installation guide by clicking the icon on the left.

Download 034Motorsport C4 Fuel Pump Relay Install Guide

Fitted Photos

Manufactured by

034EFI

Part Number

034-106-Z001