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Shop fuel system parts for the Subaru WRX STI 2008–2014 (GR/GV chassis). The GR hatchback and GV sedan run the EJ257 2.5L turbocharged flat-four under boost, and enthusiast sources stress high-octane fuel and correct fuel delivery as part of avoiding detonation on this engine. You will find fuel pumps, injectors, rails, lines and flex-fuel kits here — every part in this collection is fitment-tagged for the 2008–2014 WRX STI, so check your year and body style against the product fitment notes before ordering.
Every fuel system part in this collection is fitment-tagged for the GR/GV-chassis WRX STI (2008–2014) with the EJ257 — GR hatchback and GV sedan alike. Size pumps and injectors to your power and tuning plans, and confirm your year and body style on the product page before ordering.
Enthusiast sources on this engine stress high-octane fuel and correct fuel delivery under boost as part of avoiding detonation on the EJ257. A fuel system that cannot keep up — or fuel below the octane the tune expects — removes that margin, so match pump and injector capacity to your power target and the fuel you will actually run.
Start with the full Subaru STi 2008-2014 collection linked at the top of this page, or jump straight to a category — Brakes, Drivetrain, Engine, Tuning, Exhaust, Exterior and more are all linked above, and every one of them is scoped to the Subaru STi 2008-2014 only.