AMS 08+ Subaru STI Inline Fuel Pump Kit

AMS 08+ Subaru STi Fuel Pump Upgrade Kit

The AMS 08+ Subaru STi fuel pump kit is capable of supporting 550-600whp on gasoline and 500whp on E85 fuel. This kit allows you to retain untampered fuel sending units so you don’t need to worry about sending in your core or down time. By incorporating a Walbro 255lph in-line pump into the fuel system without cutting any OEM fuel lines, you can be assured a clean, easy installation that can be returned to stock at any time.


  • E85 friendly -6 AN 300psi rated fuel hose
  • Fuel pump sending unit remains stock
  • No core charge and no down time
  • Fuel pump controller bypass for even more flow


  • 550-600whp on gasoline
  • 500whp on E85 fuel

Kit Includes

  • Walbro 255lph Fuel Pump
  • Walbro Hardware and Mounting Kit
  • All hoses, fittings, wiring and hardware for install


  • 2008+ Subaru STi

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The goal of AMS is to provide the highest quality, best performing products available.
By utilizing research and development and rigorous testing programs AMS will never compromise the quality or performance of our products.

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