2015-2021 STI Fuel System Parts & Upgrades

Maintain or modify your fuel system with a wide selection of aftermarket performance fuel system parts & OEM replacements for your fourth generation STI from Subimods. From fuel injectors & fuel pumps to fuel rails & lines, fuel pressure regulators, sensors, & more - find quality kits & replacement parts at a great price from top brands like Perrin, Turbosmart, Radium Engineering, COBB, Aeromotive, IAG Performance & more.

Fuel system parts compatible with: 2015, 2016, 2017, 2018, 2019, 2020 & 2021 Subaru STI.