Aeromotive’s Single 340lph Drop-In Stealth System for 2008-2021 Subaru WRX/STi delivers precision fuel delivery with aerospace-grade engineering. This direct drop-in pump includes the Apex Jet Siphon for seamless factory jet-siphon support. Designed for high-performance applications, it requires an EFI bypass regulator, upgraded fuel filter, and compatible supply and return lines. Engineered to handle both gasoline and E85 fuels, this system ensures reliable, efficient fueling under demanding conditions. Ideal for enthusiasts seeking proven track-tested performance and durability.